User's Manual

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Table Of Contents

34-45-47

Title Page T-1

1 Dec 2003

Pub. No. 012-0680-001

Printed in U.S.A.

Honeywell

Aerospace Electronics Systems

P.O. Box 97001

Redmond, Washington 98073-9701

U.S.A

Maintenance Manual

CAS-100

Collision Avoidance System

This document contains technical data and is subject to U.S. export regulations.

These commodities, technology, or software were exported from the United States in accordance with the export

administration regulations. Diversion contrary to U.S. law is prohibited.

Summary of content (177 pages)

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Honeywell Aerospace Electronics Systems P.O. Box 97001 Redmond, Washington 98073-9701 U.S.A Maintenance Manual CAS-100 Collision Avoidance System This document contains technical data and is subject to U.S. export regulations. These commodities, technology, or software were exported from the United States in accordance with the export administration regulations. Diversion contrary to U.S. law is prohibited. 34-45-47 Printed in U.S.A. Pub. No.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM PROPRIETARY NOTICE This document and the information disclosed herein are proprietary data of Honeywell. Neither this document nor the information contained herein shall be used, reproduced, or disclosed to others without the written authorization of Honeywell, except to the extent required for installation or maintenance of the recipient’s equipment.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM RECORD OF REVISIONS For each revision, put the revised pages in your manual and discard the superseded pages. Write the revision number and date, date put in manual, and the incorporator’s initials in the applicable columns on the Record of Revisions. The initial H shows Honeywell is the incorporator.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM RECORD OF TEMPORARY REVISIONS Instructions on each page of a temporary revision tell you where to put the pages in your manual. Remove temporary revision pages only when discard instructions are given. For each temporary revision, put the applicable data in the record columns on this page.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM SERVICE BULLETIN LIST Service Bulletin Identified Mod Date Included in this Manual Description 34-45-47 . Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM LIST OF EFFECTIVE PAGES Subheading and Page Title T-1 T-2 Record of Revisions RR-1 RR-2 Record of Temporary Revisions RTR-1 RTR-2 Service Bulletin List SBL-1 SBL-2 List of Effective Pages LEP-1 LEP-2 LEP-3 LEP-4 LEP-5 LEP-6 Table of Contents TC-1 TC-2 TC-3 TC-4 TC-5 TC-6 TC-7 TC-8 TC-9 TC-10 Introduction INTRO-1 F Date 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM LIST OF EFFECTIVE PAGES Subheading and Page F F 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41/42 43 44 45 46 47 48 49 50 51 52 53 54 Date 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM LIST OF EFFECTIVE PAGES Subheading and Page 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 F 111/112 F 113/114 Testing and Fault Isolation 1001 1002 1003 1004 1005 1006 1007 1008 F Date Subheading and Page Date 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM LIST OF EFFECTIVE PAGES Subheading and Page 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 F Date 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM LIST OF EFFECTIVE PAGES Subheading and Page F F F F F F F F F F F F F F F F 2073/2074 2075/2076 2077/2078 2079/2080 2081/2082 2083/2084 2085/2086 2087/2088 2089/2090 2091/2092 2093/2094 2095 2096 2097/2098 2099/2100 2101/2102 2103/2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 Date 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec 2003 1 Dec
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM TABLE OF CONTENTS Subject Page INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .INTRO-1 1. Proprietary, Export, and Precautionary Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .INTRO-1 A. Proprietary Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .INTRO-1 B. Export Notice . . . . . . . . . . . . . . . .
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Subject Page 4. System Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 A. General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 B. CAS-100 Functional Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 (1) Surveillance Function . . . . . . . . .
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Subject Page 6. Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 A. General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 (1) Complete Block Diagrams and Description of Input/Output Signals . . . . . . . . . . . . . 59 (2) TCAS Failure Monitoring. . . . . . . . . . . . . . . . . . . .
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Subject Page C. Using TCAS Processor Front-Panel Buttons and LCD Display . . . . . . . . . . . . . . . . . . 1008 (1) General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1008 (2) Unit OK/System Failed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1010 (3) System OK/Failed Display Screen . . . . . . . . . . . . . . . . . . . . . . . . . .
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Subject Page (3) Directional Antenna Adapter Installation for 8-hole, Flat Base Antenna . . . . . . . . 2031 C. TCAS Omni Antenna Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2035 (1) Antenna Positioning and Wiring Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 2035 (2) Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Subject Page E. TRA-67 ATC Mode S Transponder System Component . . . . . . . . . . . . . . . . . . . . . . . 2055 (1) Removal and Reinstall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2055 F. Omni Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2055 (1) Removal and Reinstall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM List of Illustrations Figure Page Figure Intro-1 Symbols. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Intro-5 Figure 1 CAS-100 Collision Avoidance System Components . . . . . . . . . . . . . . . . . . . . . . . 0 Figure 2 CAS-100 Sensitivity Level Altitude Layers . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Figure Page Figure 1014 Pitch Display Screen Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1034 Figure 1015 Heading Display Screen Example. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1034 Figure 1016 Climb Inhibit Display Screen Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1035 Figure 1017 Air/Ground Display Screen Example. . . . . . . . . . . . . . . . . . . . .
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM List of Tables Table Table Intro-1 Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 7 Table 8 Table 9 Table 10 Table 11 Table 12 Table 13 Table 14 Table 15 Table 16 Table 17 Table 18 Table 19 Table 20 Table 21 Table 22 Table 1001 Table 1002 Table 1003 Table 1004 Table 1005 Table 1006 Table 1007 Table 1008 Table 1009 Table 2001 Table 2002 Table 2003 Page Related Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table Table 2004 Table 2005 Table 2006 Table 2007 Table 2008 Table 2009 Table 2010 Table 2011 Table 2012 Table 2013 Table 2014 Table 2015 Table 2016 Table 2017 Page Inspection/Check Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2036 Upper TCAS Antenna Bearing Accuracy Chart . . . . . . . . . . . . . . . . . . . . . . . . 2047 Lower TCAS Antenna Bearing Accuracy Chart . . . . . . . . . . . . . . . . . . . . . . .
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM INTRODUCTION 1. Proprietary, Export, and Precautionary Data A. Proprietary Notice (1) This document and the information disclosed herein are proprietary data of Honeywell. Neither this document nor the information contained herein shall be used, reproduced, or disclosed to others without the written authorization of Honeywell, except to the extent required for installation or maintenance of the recipient’s equipment.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM CAUTION: THE CAS-100 COLLISION AVOIDANCE SYSTEM CONTAINS ITEMS THAT ARE ELECTROSTATIC DISCHARGE SENSITIVE (ESDS). IF YOU DO NOT OBEY THE NECESSARY CONTROLS, A FAILURE OR UNSTATISFACTORY OPERATION OF THE UNIT CAN OCCUR FROM ELECTROSTATIC DISCHARGE. USE APPROVED INDUSTRY PRECAUTIONS TO KEEP THE RISK OF DAMAGE TO A MININUM WHEN YOU TOUCH, REMOVE, OR INSERT PARTS OR ASSEMBLIES. 2. Content Data A.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table Intro-1. Related Publications (cont) PUBLICATION AXT-81A TCAS Auxiliary Test Panel, Part No. 071-50012-8101, Component Maintenance Manual PUBLICATION No. I.B. 1181CT ATA No. 34-45-04 I.B. 1181D IVA-81A Traffic Advisory/Vertical Speed Indicator, (TA/VSI), Part No. 066-50001-XXXX, Component Maintenance Manual 34-45-20 IVA-81A Traffic Advisory/Vertical Speed Indicator (TA/VSI), Part No. 066-50001-XXXX, Illustrated Parts Catalog I.B.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table Intro-1. Related Publications (cont) PUBLICATION PUBLICATION No. Standard Repair Procedures for Honeywell Avionics Equipment Instruction Manual A09-1100-004 Abbreviations for Use on Drawings and in Text* ASME Y14.38-1999 (Formerly ASME Y1.1-1989) Graphic Symbols for Electrical and Electronics Diagrams* ANSI Y32.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM C. Symbols (1) The symbols in Figure Intro-1 may be used to identify static sensitive (ESDS) and moisture sensitive devices. Figure Intro-1. Symbols D. Weights and Measurements (1) All weights and measurements are in U.S. values and S.I. (metric values). (2) The letter symbols for units of measurement are the same as shown in the GPO Style Manual and in ANSI/IEEE Std 260.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM E. Acronyms and Abbreviations (1) The acronyms and abbreviations that follow help the reader identify terms and definitions used by Honeywell. (2) The letter symbols for units of measurement are the same as shown in the GPO Style Manual and in ANSI/IEEE Std 260.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Term Definition Hg mercury ID identification IEEE Institute of Electrical and Electronics Engineers I/O input/output LBP left bottom plug LCD liquid crystal display LED light-emitting diode LMP left middle plug LRU line replaceable unit LTP left top plug MSL mean sea level MTL minimum trigger level NAR non-altitude reporting NM nautical mile No.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Term Definition TCAS Traffic Alert and Collision Avoidance System TNC threaded N connector TSO Technical Standing Order VSI vertical speed indicator VSWR voltage standing wave ratio 34-45-47 Page INTRO-8 1 Dec 2003 Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM 012-0680-001 CAS-100 Collision Avoidance System Components Figure 1 34-45-47 Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM DESCRIPTION AND OPERATION 1. General This section contains data for the function and the operation of the Honeywell CAS-100 Collision Avoidance System, hereafter referred as the CAS-100, TCAS, or by its full nomenclature. The CAS-100 components are shown in Figure 1. A. Purpose of Equipment CAS-100 is an airborne traffic alert and collision avoidance advisory system that operates without the support from Air Traffic Control (ATC) ground stations.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Repetitious TCAS interrogations in the Mode S and the Mode C formats monitor the aircraft positions. The transponders reply after a set interval when interrogated. The measurement of time between interrogation transmission and reply reception lets TCAS find the range of the intruder. If the intruder transponder uses an altimeter input, TCAS receives the intruder altitude reports in the replies and can find the altitude of the intruder.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM TCAS equipment operates at the same transmit and receive frequencies as ground stations (1030 MHz transmit and 1090 MHz receive).
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 1 lists the equipment type, the Honeywell part numbers, and provides a brief description of the TPA-100A TCAS processor, directional antenna array, omnidirectional antenna, TA/VSI indicator unit, RA/VSI indicator unit, dedicated TCAS traffic display, Mode S transponder, and Mode S transponder/TCAS control units. Table 2 lists accessories for the TPA-100A processor.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 1.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 1. TCAS System Components (Honeywell Supplied) (cont) Equipment Type Honeywell Part Number Description TCAS Processor (cont) TPA-100A (cont) 940-0300-001 940-0400-001 The TCAS processor monitors the failure status input from external equipment and continuously does built-in-test diagnostics. When functional test is started from the Mode S transponder/TCAS control unit, the TCAS processor does extensive system functional test diagnostics.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 1. TCAS System Components (Honeywell Supplied) (cont) Equipment Type Honeywell Part Number Description Directional Antenna (cont) ANT-81A (cont) 071-50001 During TCAS receptions, each of the four directional antenna elements accepts any 1090-MHz rf signal that is present. The phasing of these received signals is calculated by the direction that the rf energy is received.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 1. TCAS System Components (Honeywell Supplied) (cont) Equipment Type Honeywell Part Number Description TA/VSI (Traffic Advisory/Vertical Speed Indicator) (cont) IVA-81A/IVA-81D (cont) IVA-81A: 066-50001 IVA-81D: 066-01171 The vertical speed display operates from pneumatic or air data electrical input. The display receives RA, traffic, and TCAS mode data on a high-speed ARINC 429 bus through the TPA-100A TCAS processor.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 1. TCAS System Components (Honeywell Supplied) (cont) Equipment Type Honeywell Part Number Description RA/VSI (Resolution Advisory/Vertical Speed Indicator) IVA-81B NOTE 4. 066-50002 The indicator is a front-panel attached, electro-mechanical display unit. The unit displays vertical speed with a stationary vertical speed scale.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 1. TCAS System Components (Honeywell Supplied) (cont) Equipment Type Honeywell Part Number Description Dedicated TCAS Traffic Display ITA-81A 066-50003 The ITA-81A is a front-panel attached cathode ray tube (CRT) TCAS display unit. The display receives the traffic and TCAS mode data on a high-speed ARINC 429 bus from the TPA-100A TCAS processor. The unit displays an aircraft symbol and range rings with TCAS traffic and mode.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 1. Equipment Type TCAS System Components (Honeywell Supplied) (cont) Honeywell Part Number Description TRA-67 Transponder Subsystem (cont) TRA-67A Mode S Transponder (cont) 066-01127 Once for each second of time, Mode S transponders automatically transmit a squitter message that contains its aircraft address identification.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 1. TCAS System Components (Honeywell Supplied) (cont) Equipment Type Honeywell Part Number Description TRA-67 Transponder Subsystem (cont) Through the directional TCAS antenna, all TCAS equipped aircraft at intervals transmit a message that tells other TCAS equipped aircraft that a TCAS equipped aircraft is present.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 1. TCAS System Components (Honeywell Supplied) (cont) Equipment Type Honeywell Part Number Description TRA-67 Transponder Subsystem (cont) TRA-67A Mode S (cont) 066-01127 The Mode S transponder receives 115 V 400 Hz from an aircraft power source. If a synchro altitude source input is used, the transponder receives 26 V ac synchro reference power from an aircraft power source. The transponder is connected to the aircraft suppression bus.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 1. TCAS System Components (Honeywell Supplied) (cont) NOTES: 1. One or two directional antennas can be used in a CAS-100 system. A top-mounted ANT-81A is always necessary. To find intruder bearing on bottom antenna, an ANT-81A must be installed on the bottom of the aircraft. 2. Used if ANT-81A directional antenna is not used for bottom TCAS antenna. 3. IVA-81A/D used if traffic displays are not provided on another display unit (i.e.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM D. Aircraft Equipment Required But Not Supplied By Honeywell Table 3. lists aircraft equipment not supplied by Honeywell, but required for CAS-100 operation. Table 3. Aircraft Equipment Required But Not Supplied By Honeywell Aircraft Equipment Description 115 V 360-800 Hz or 28 V dc Power Source The primary power source for TA/VSI, RA/VSI, dedicated TCAS traffic display, and Mode S Transponder System.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 3. Aircraft Equipment Required But Not Supplied By Honeywell (cont) Aircraft Equipment Description Aircraft Switches Landing Gear Switch Supplies the aircraft landing gear extended or retracted discrete status input to the TCAS processor. Air/Ground Switch Supplies the aircraft on-the-ground/ in-flight discrete status input to the TCAS processor.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM E. Aircraft Optional (Nonessential) Equipment Table 4 lists TCAS and aircraft equipment that is optional for each user specification. Table 4. CAS-100 and Aircraft Optional Equipment Optional Aircraft Equipment Description Cockpit Headphones Augments cockpit speaker by providing headset annunciations for verbal advisory alert messages from the voice synthesizer in TPA-100A TCAS Processor.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 4. CAS-100 and Aircraft Optional Equipment (cont) Optional Aircraft Equipment Description Performance Management Computer Supplies the aircraft climb rate performance limit discrete input to the TPA-100A TCAS Processor. Wind Shear System and/or Ground Proximity System Supplies the TCAS advisory inhibit discrete input to the TPA-100A TCAS Processor during wind shear or ground proximity alarm conditions.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM B. TPA-100A TCAS Processor Table 5 lists the available configurations of the TCAS processor and the related features. Table 6 contains or references a short description of the processor features that are not self-explanatory. Table 5. TPA-100A TCAS Processor, Available Configurations Features Part Numbers 940-0300 and 940-0400 Basic Unit -001 X Table 6.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM (2) Altitude Tracking Volumes TCAS tracks other transponder equipped aircraft that are in a relative altitude range of ±10,000 feet. NOTE: The display altitude volumes are different from the internal tracking volumes. The typical display volumes are ±8700 feet. B. TCAS Sensitivity Level - Operating Modes TCAS logic separates the adjacent airspace into the altitude layers as shown in Figure 2.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM CAS-100 Sensitivity Level Altitude Layers Figure 2 34-45-47 Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 7 gives data related to sensitivity level determinations and Figure 3 gives data related to the conditions for resolution and traffic advisory limits compared to sensitivity levels. This data is used as a reference during this manual Table 7. TCAS Sensitivity Level Determinations Mode Description Sensitivity Level 0 Sensitivity level is set in automatic mode by the altitude or by the ground command.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 7. TCAS Sensitivity Level Determinations (cont) Mode Sensitivity Level 3, 4, 5, 6, and 7 Description TCAS does surveillance and tracking functions in sensitivity levels 3 through 7. TCAS gives resolution and traffic advisories in these levels. NOTE The conditions for sensitivity level 3 through 7 are from own aircraft altitude as follows: (1) Sensitivity level 3 - Own aircraft altitude is between 1,000 and 2,350 feet AGL (radio altitude).
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Typical Resolution Advisory and Traffic Advisory Volumes for Sensitivity Levels Figure 3 (Sheet 1 of 2) 34-45-47 Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM These two conditions cause a Traffic Advisories (TAs) problem: 1. TCAS calculates that at the current closure rate and distance, the time separating own aircraft and intruder aircraft is less than TA Alarm Time AND the altitude difference between own aircraft and intruder aircraft is less than the TA Relative Altitude Threshold. 2. The separation in slant range between own aircraft and intruder aircraft is less than minimum TA Protection Volume.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM C. Component Leading Particulars (1) Leading Particulars Leading particulars for the TPA-100A TCAS Processor are given in Table 8. Leading particulars for the ANT-81A Directional Antenna are given in Table 9. Leading particulars for the IVA-81A TA/VSI are given in Table 10. Leading particulars for the IVA-81B RA/VSI are given in Table 11. Leading particulars for the IVA-81D TA/VSI are given in Table 12.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 8. TPA-100A TCAS Processor Leading Particulars (cont) Characteristic Description Receiver (cont) Dynamic Minimum Trigger Level (DMTL) Threshold ATCRBS MTL + 13 dB Minimum Pulse Width 300 nsec Maximum Pulse Rise Time 0.5 µsec Delay Difference (between top and bottom antenna channels, including transmission lines) 0.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 9. ANT-81A TCAS Directional Antenna Leading Particulars Characteristic Description Form Factor ARINC 735A (teardrop shape) Antenna Base Types Curved base (071-50001-8104) Flat base (071-50001-8102, -8103) Temperature Range Operating -55C to +70C Storage -55C to +85C Maximum Weight 2.0 lb (0.91 kg) Overall Dimensions See Outline Drawings, Figures 2007 thru 2009. Antenna Mounting Footprint See Figure 2010.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 9. ANT-81A TCAS Directional Antenna Leading Particulars (cont) Characteristic Description Main Beam Characteristics Operational Beam Positions 4 Half Power Azimuth Beam Width (measured over -15 to +20 elevation) ≥ 90° Steering Quantization 90° Omni Beam Characteristics Operational Beam Positions 360° Beam Null Compared to Main Beam (at each elevation from -15 to +20) ≥ 9 dB Input Port VSWR 1.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 10. IVA-81A TA/VSI Leading Particulars Characteristic Description Form Factor 3ATI x 7.5 inches deep Components Solid state, no mechanical parts Maximum Weight 2.75 lb (1.25 kg) Overall Dimensions See Outline Drawing, Figure 2011.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 10. IVA-81A TA/VSI Leading Particulars (cont) Characteristic Description Pneumatic Connector (located on indicator rear panel) See Outline Drawing, Figure 2011. Electrical Connector (located on indicator rear panel) See Outline Drawing, Figure 2011. TSO C119a, C8c Environmental Certification Refer to Table 14. 34-45-47 Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 11. IVA-81B RA/VSI Leading Particulars Characteristic Description Form Factor 3ATI x 7.5 inches deep Components Electromechanical and solid state Maximum Weight 2.9 lb (1.3 kg) Overall Dimensions See Outline Drawing, Figure 2012.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 12. IVA-81D TA/VSI Leading Particulars Characteristic Description Form Factor 3ATI x 7.5 inches deep Components Solid state, no mechanical parts Maximum Weight 3.0 lb (1.4 kg) Overall Dimensions See Outline Drawing, Figure 2013. Mounting Front, panel mount; Marmon clamp or equivalent Software Certification D0-178B, Level B Power Requirements Primary 115 V, 400 Hz or 28 V dc primary power.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 12. IVA-81D TA/VSI Leading Particulars (cont) Characteristic Description Data Input High-speed ARINC 429 Front-mounted Range Control Optional Front-mounted TA SEL Switch and BRT Control Optional Pneumatic Connector (located on indicator rear panel) See Outline Drawing, Figure 2013. Electrical Connector (located on indicator rear panel) See Outline Drawing, Figure 2013.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 13. ITA-81A Traffic Display Leading Particulars Characteristic Description Maximum Weight 8 lb (3.7 kg) Overall Dimensions See Outline Drawing, Figure 2014.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM (2) Environmental Certification CAS-100 equipment meets the environmental conditions of the Radio Technical Commission for Aeronautics document number DO-160D, Environmental Conditions and Test Procedures for Airline Electronic/Electrical Equipment and Instruments. Environmental certification categories for CAS-100 equipment are defined in Table 14. Table 14.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM 4. System Description A.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM (2) Tracking Function • Tracks maximum 45 combined Mode S and Mode A/C transponder equipped intruder aircraft. Tracks range of intruder aircraft. Tracks intruder relative bearing if tracking is occurring on a directional antenna. Tracks intruder relative altitude if intruder is reporting altitude. • Calculates estimated intruder relative position. • Calculates closing range rate. • Calculates altitude change rate if intruder is reporting altitude.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM (7) Air-to-Air Coordination Function A maneuvering coordination data link is established with the intruder if the intruder aircraft is TCAS equipped and becomes a threat . This data link makes sure that the resolution advisories in the two TCAS equipped aircraft are controlled and compatible. The control links are established between the two TCAS systems through the Mode S transponder.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM (d) Own aircraft identification (ID) code (transponder ID) received on the ARINC 429 data bus from own Mode S transponder. Own aircraft identification is input to the transponder through 24 discrete bit strapped inputs. Own aircraft identification is used by the TCAS processor during air-to-air coordination procedures. (e) Own aircraft maximum airspeed data received on the ARINC 429 data bus from own Mode S transponder.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Collision Avoidance System Simplified Block Diagram Figure 4 34-45-47 Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM (k) Five discrete input from RA/TA Intruder Display Limit straps. These straps determine the maximum number of aircraft that can be shown on the traffic display (from 1 to 30). (l) Discrete input from Ground Display Mode strap. This input determines if the traffic is shown when own aircraft is on-the-ground. (m) Discrete input from RA/TA Display All Traffic Mode strap.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM (3) (q) Six discrete input from synthesized Audio Level Control straps. Three of these straps determine the audio output levels to the speaker and phones when the aircraft is airborne. The other three straps determine the audio output levels when the aircraft is on the ground. (r) Discrete input from Functional Test Inhibit Strap. This input determines if the TCAS functional test is inhibited when the aircraft is airborne.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM (c) The TCAS processor starts to interrogate the intruder if a correct Mode S squitter message is sensed. The Mode S equipped intruder is put into the track if an interrogated Mode S equipped aircraft is in TCAS Mode S tracking range and altitude. The mode S track changes are then done. These changes include the TCAS processor formatting and transmitting 1030 MHz Mode S interrogation messages on the directional antenna and/or the omni antenna.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM ATCRBS Mode C and Mode S Interrogation Formats Figure 5 34-45-47 Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM ATCRBS/Mode S Transponder Reply Message Formats Figure 6 34-45-47 Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM (g) The TCAS processor calculates the correct resolution advisory to keep or make sure of the safe separation between own and threat category aircraft. The TCAS processor then outputs resolution advisory data on the ARINC 429 buses to the TA/VSI or RA/VSI units. RA traffic symbol position and alert data is output on the ARINC 429 data bus to the TA/VSI or PPI display unit.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM (m) The TCAS processor also controls: 1 Scheduling for interrogations done on the directional and omni antennas. 2 TCAS sensitivity level operating modes. 3 Generation of coasting data during the periods when tracking data is temporarily not found. NOTE: For more details, refer to applicable Mode S Transponder manual, recorded in Table Intro-1.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM (q) If the ADS-B program pin is strapped as part of the installation approval process, the use and display of passive/ADS-B data must be validated. Part of this process will include: 1 Ensure that the existing displays which do not process the DTIF output do still correctly receive and process the standard TCAS traffic file. 2 The consolidation and symbology associated with the DTIF must be approved and certified.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM (5) Rear Connector A six section rear connector supplies the system connects to the TCAS processor. The six sections of the connector are shown left bottom plug (LBP), right bottom plug (RBP), left middle plug (LMP), right middle plug (RMP), left top plug (LTP), and right top plug (RTP). The Figure 8 shows the external devices connected to each of the six sections of the connector.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM TCAS Transmit and Receive Beam Patterns for Directional Antenna Figure 7 All pulses in a TCAS (Mode S) message transmission from the directional antenna are radiated as a directional main beam pattern. To get the main beam pattern, the four signals representing each transmit pulse are phase shifted by the TCAS processor. The phase shifting set on the four elements shows the direction of the main beam to be transmitted (one of four beams).
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM ATCRBS Mode A/C transponders in the adjacent airspace that sense a suppression beam signal larger in amplitude than the main beam signal, are prevented from replying to the interrogation. The result of the ATCRBS P2 hold back is to control the good TCAS interrogation beam width and thus limit interference from unwanted ATCRBS receptions.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM C. TA/VSI Display (1) General The IVA-81A/D Resolution Advisory/Traffic Advisory/Vertical Speed Indicator (TA/VSI) display is a high resolution, sunlight readable, full color, liquid crystal display (LCD) (Figures 2011, 2012, and 2013). The indicator lets resolution advisory and traffic data be shown in the space previously for display of vertical speed only. Vertical speed is shown on a standard circular dial with a pointer.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM (3) Traffic Display The TA/VSI traffic display shows adjacent intruder aircraft that have Mode S or ATCRBS Mode A/C transponders, are sensed on a directional antenna, and are in the display range. NOTE: The TCAS processor interface also supports traffic displays on a dedicated TCAS traffic display or a PPI radar display changed for TCAS. The unit set to show traffic depends on equipment present in the aircraft and other user specifications.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM (j) Display range limit control, ABOVE/NORM/BELOW nonthreat altitude display limit control, and relative/flight level altitude display control data originating from the transponder/TCAS control unit and received by the traffic display through the Mode S transponder and TCAS processor.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM E. ITA-81A Traffic Display The ITA-81A Traffic Display is a CRT display for TCAS traffic data only (Figure 2014). The ITA-81A receives traffic display data from the TCAS processor through a high-speed ARINC 429 data bus. The ITA-81A does not show resolution advisories. Refer to Table 17 for the ITA-81A Traffic Display Input and Output. F. PPI Traffic Advisory Display Option The TCAS/PPI is a group of two displays.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM • Supplies the following data to the TPA-100A TCAS Processor through a ARINC 429 data link: -- Own aircraft identification code, pressure altitude, and maximum airspeed data. -- TCAS broadcast data and air-to-air resolution advisory coordination data received from other TCAS equipped aircraft. -- TCAS sensitivity level and other mode control data received by own Mode S transponder from own transponder/TCAS control unit.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM The Mode S transponder/TCAS control unit moves the control data to the Mode S transponder through an ARINC 429 data link. The transponder/TCAS control unit FAIL lamp receives a failure status discrete input from the Mode S transponder. CTA-100( ) controls and indicators are shown in Figures 10 and 11 and are functionally given in Tables 18 and 19. I.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Refer to Table 15 for the TPA-100A TCAS Processor input and output. The IVA-81A/D TA/VSI and IVA-81B RA/VSI input and output are shown in Table 16. Table 17 shows the input and output of the ITA-81A Traffic Display. 34-45-47 Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM TCAS Processor System Interconnect Block Diagram Figure 8 (Sheet 1 of 3) 34-45-47 Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM TCAS Processor System Interconnect Block Diagram Figure 8 (Sheet 2 of 3) 34-45-47 Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM TCAS Processor System Interconnect Block Diagram Figure 8 (Sheet 3 of 3) 34-45-47 Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 15. TPA-100A TCAS Processor Inputs and Outputs Source Or Destination Processor I/O Signal Name and Type General Description Directional Antenna Top and bottom directional antenna. Four rf, bi-directional, transmit/ receive channels. 1030-MHz differential phase shift keying modulated TCAS transmit messages from the TCAS processor to the directional antenna and 1090-MHz received messages from the directional antenna to the TCAS processor.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 15. TPA-100A TCAS Processor Inputs and Outputs (cont) Source Or Destination Processor I/O Signal Name and Type General Description OWN ATTITUDE AND HEADING RELATED I/O Synchro Magnetic Compass System Pitch and Roll Gyros Attitude/Heading Reference System (AHRS or IRS) Heading Synchro X, Y, Z Heading Own heading data to TCAS processor from the aircraft synchro heading system.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 15. TPA-100A TCAS Processor Inputs and Outputs (cont) Source Or Destination Processor I/O Signal Name and Type General Description OWN ALTITUDE RELATED I/O Analog Radio Altimeter No. 1 ± Analog Radio Altitude No. 1 Input AGL altitude data to TCAS processor from analog radio altimeter No. 1. Discrete Radio Altitude No. 1 Valid Radio altimeter No. 1 failure status input to TCAS processor. ± Analog Radio Altitude No.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 15. TPA-100A TCAS Processor Inputs and Outputs (cont) Source Or Destination Processor I/O Signal Name and Type General Description OWN AIRCRAFT PERFORMANCE LIMIT AND FLIGHT STATUS RELATED I/O Cont Five Strapped Pins on Processor Rear Connector Five discretes from Altitude Limit Straps Show the maximum altitude at which own aircraft can get a climb rate of 1500 feet for each minute.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 15. TPA-100A TCAS Processor Inputs and Outputs (cont) Source Or Destination Processor I/O Signal Name and Type General Description RA AND TA DISPLAY RELATED I/O (cont) TA/VSI No. 1 or RA/VSI No. 1, PPI, or dedicated display. (cont) Display Status No. 3 Discrete (Optional for maintenance reporting.) Failure status output of PPI or dedicated display connected to TA/RA Display No. 1 high-speed ARINC 429 bus. TA/VSI No. 2 or RA/VSI No.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 15. TPA-100A TCAS Processor Inputs and Outputs (cont) Source Or Destination Processor I/O Signal Name and Type General Description RA AND TA DISPLAY RELATED I/O (cont) RA/VSI No. 2 (RA/VSI that accepts low-speed 429 input data) (cont) Display Status No. 2 Discrete RA/VSI No. 2 failure status output to TCAS processor. Five Strapped Pins on Processor Rear Connector Intruder Display Limit Straps.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 15. TPA-100A TCAS Processor Inputs and Outputs (cont) Source Or Destination Processor I/O Signal Name and Type General Description RA AND TA ALERT RELATED I/O Three Strapped Pins on Processor Rear Connector Audio Level Program Straps (Airborne). Three Discrete Input. For adjusting synthesized voice output of the TCAS processor when the aircraft is airborne.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 15. TPA-100A TCAS Processor Inputs and Outputs (cont) Source Or Destination Processor I/O Signal Name and Type General Description MAINTENANCE RELATED I/O Maintenance Computer or Centralized Failure Display System (CFDS) Maintenance Data. ARINC 429 high-speed transmit and ARINC 429 high-speed receive bus.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 15. TPA-100A TCAS Processor Inputs and Outputs (cont) Source Or Destination Processor I/O Signal Name and Type General Description SUPPRESSION BUS RELATED I/O Own Aircraft L-Band Equipment Suppression Pulse input/output Bi-directional bus. An input pulse suppresses the TCAS receiver. An output suppression pulse suppresses other L-band equipment in the aircraft. 115 V 400 Hz or 28 V dc and 26 V ac reference power input.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM THIS PAGE LEFT BLANK 34-45-47 Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM IVA-81A/D and IVA-81B RA/VSI System Interconnect Block Diagram Figure 9 34-45-47 Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 16. IVA-81A/D TA/VSI and IVA-81B RA/VSI Inputs and Outputs Source Or Destination I/O Signal Name and Type General Description TCAS PROCESSOR RELATED I/O TCAS Processor TCAS Data High-Speed ARINC 429 (Two Ports) Traffic display and resolution advisory data from TCAS processor to TA/VSI or RA/VSI No. 1 or No. 2. (The RA/VSI uses only that data for resolution advisories.) Display Status No. 1 Discrete and Display Status No.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 16. IVA-81A/D TA/VSI and IVA-81B RA/VSI Inputs and Outputs (cont) Source Or Destination I/O Signal Name and Type General Description VERTICAL RATE SOURCE RELATED I/O (cont) Aircraft Digital ARINC 575 (Label 212) Rate Source Altitude Rate Data. Digital ARINC 575. Low-speed ARINC 419 Same as above. Aircraft Digital ARINC 419 (Label 212) Rate Source Altitude Rate Data. Low-speed digital vertical speed, ARINC 419.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 17. ITA-81A Traffic Display Inputs and Outputs Source Or Destination I/O Signal Name and Type General Description TCAS PROCESSOR RELATED I/O TCAS Processor TCAS Data High-Speed ARINC 429 Traffic display data from TCAS processor to dedicated TCAS traffic display. Display Status No. 3 Discrete Supplies dedicated display failure status to TCAS processor.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM 7. Controls and Indicators A. General The primary manual controls used to operate the CAS-100 system are contained on the transponder/TCAS control units. NOTE: TCAS advisory and/or serviceable status indications are given on the TA/VSI, RA/VSI, PPI, dedicated traffic display, cockpit audio system, transponder/TCAS control unit, front panel of the TCAS processor, and front panel of the Mode S transponder unit.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM CTA-81A Control Unit (Typical) Figure 10 Refer to Table 18 for the CTA-81A Control Unit controls and indicators. 34-45-47 Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 18. CTA-81A Control Unit Controls and Indicators Control/Indicator (See Figure 10) Function ATC 1-2 Switch Sets one of two Mode S transponders to be under control of the CTA-81A Control Unit. The nonselected Mode S transponder is put in STANDBY mode. ALT 1-2 Switch The switch sets one of two Mode S transponder altitude source input ports. Function Selector Switch Rotary switch.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 18. CTA-81A Control Unit Controls and Indicators (cont) Control/Indicator (See Figure 10) Function Selector Switch (cont) ALT OFF Position (cont) ALT ON Position Function In-Flight - Turns on Mode S transponder to fully active state and places TCAS in STANDBY mode (TCAS sensitivity level No. 1). The Mode S transponder transmits squitters and replies to Mode S, ATCRBS Mode C, and Mode A interrogations.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 18. CTA-81A Control Unit Controls and Indicators (cont) Control/Indicator (See Figure 10) Function Selector Switch (Cont.) TA Position (TA ONLY Mode) (Cont.) Function In-Flight - Turns the Mode S transponder to the operation condition and puts the TCAS in TA ONLY mode (traffic advisory only mode) (TCAS sensitivity level No. 2). The Mode S transponder transmits squitters and replies fully to Mode S, ATCRBS Mode C, and Mode A interrogations.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 18. CTA-81A Control Unit Controls and Indicators (cont) Control/Indicator (See Figure 10) Function Selector Switch (Cont.) TA/RA Position (Cont.) Function Mode C and Mode A interrogations. TCAS broadcasts and does all Mode S and ATCRBS surveillance and tracking functions. TCAS supplies traffic displays for RA, TA, proximity, and nonthreat category aircraft (see NOTE 2.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 18. CTA-81A Control Unit Controls and Indicators (cont) Control/Indicator (See Figure 10) Function TCAS RANGE Switch Four position rotary switch. Sets 15, 10, 5, or 3 nautical mile (NM) range scale for the traffic display. The set display scale is annunciated 15 NM, 10 NM, 5 NM, or 3 NM on the traffic display. (NOTES 5., 6., and 8.) ABOVE/NORM/BELOW Switch Three position toggle switch.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 18. CTA-81A Control Unit Controls and Indicators (cont) Control/Indicator (See Figure 10) Function Code Select Knobs Lets selection of transponder identification code. The transponder inserts this code into replies to Mode A interrogations and Mode S ATC identification requests from ground stations. The ATC IDENT code is not used by TCAS.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM CTA-81B Control Unit (Typical) (Used With One Mode S Transponder and One ATCRBS Transponder) Figure 11 Refer to Table 19 for the CTA-81B Control Unit controls and indicators. 34-45-47 Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 19. CTA-81B Control Unit Controls and Indicators Control/Indicator (See Figure 11) Function Selector Switch Function Rotary switch. Controls operating modes of one Mode S transponder (ATC 1 positions) and one ATCRBS transponder (ATC 2 positions). Requests TCAS operating modes (NOTES 1. and 2.) ATC 1 TEST Position Holding the switch in spring-loaded TEST position for one second starts the TCAS and Mode S transponder Functional self-test.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 19. CTA-81B Control Unit Controls and Indicators (cont) Control/Indicator (See Figure 11) Function Function Selector Switch (cont) ATC 1 ON Position In-Flight - Turns on the Mode S transponder to full on condition, removes power from ATCRBS transponder, and puts the TCAS in STANDBY mode (TCAS sensitivity level No. 1). The Mode S transponder transmits squitters and replies to Mode S, ATCRBS Mode C, and Mode A interrogations.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 19. CTA-81B Control Unit Controls and Indicators (cont) Control/Indicator (See Figure 11) Function Function Selector Switch (cont) ATC 1 TA Position (cont) (TCAS sensitivity level No. 2). The Mode S transponder transmits squitters and replies to the Mode S, ATCRBS Mode C, and Mode A interrogations. The TCAS broadcasts and does all the Mode S and ATCRBS surveillance and tracking functions.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 19. CTA-81B Control Unit Controls and Indicators (cont) Control/Indicator (See Figure 11) Function Selector Switch (cont) ATC 1 TA/RA Position (cont) Function The Mode S transponder transmits squitters and replies fully to the Mode S, ATCRBS Mode C, and Mode A interrogations. The TCAS broadcasts and does all the Mode S and ATCRBS surveillance and tracking functions.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 19. CTA-81B Control Unit Controls and Indicators (cont) Control/Indicator (See Figure 11) Function ALT SOURCE 1/2 Switch Sets one of two barometric altimeter sources to the activated Mode S or ATCRBS transponder. The OFF POSITION makes unserviceable the altitude squawk (two altitude sources only). FL Pushbutton Switch Spring-loaded pushbutton switch.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 19. CTA-81B Control Unit Controls and Indicators (cont) Control/Indicator (See Figure 11) Function NORM Position Selects display of nonthreat aircraft up to +2700 feet above own aircraft and down to -2700 feet below own aircraft on traffic display. BELOW Position Selects display of nonthreat aircraft down to -8700 feet below own aircraft and up to -2700 feet above own aircraft. BELOW is annunciated on the traffic display screen.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 19. CTA-81B Control Unit Controls and Indicators (cont) Control/Indicator (See Figure 11) Function NOTES: 1. The TCAS operating modes are requested from the transponder/TCAS control unit (For example, TA/RA mode is requested by turning function selector switch to TA/RA). The TCAS processor can or can not go into the requested mode dependent on prevailing conditions.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM CTA-100A Controllers Figure 12 34-45-47 Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 20. CTA-100A Control Unit Controls and Indicators Control/Indicator (See Figure 12) Function Mode Select Switch Rotary switch. Supplies mode control for the transponders and TCAS processor. The mode selector switch can put the transponders into standby mode or active mode with altitude interrogation on or off.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 20. CTA-100A Control Unit Controls and Indicators (cont) Control/Indicator (See Figure 12) Function Mode Select Switch (cont) ALT OFF Position The STANDBY/On discrete output is set to ON for the set transponder. BIT 11 of ARINC label 016 is set to 1 to inhibit altitude reporting. ALT ON Position The STANDBY/On discrete output is set to ON for the set transponder. BIT 11 of ARINC label 016 is set to 0 to enable altitude reporting.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 20. CTA-100A Control Unit Controls and Indicators (cont) Control/Indicator (See Figure 12) Function Mode Select Switch (cont) TA/RA Position (cont) (NOTE 3.) On-the-Ground - The Mode S transponder squitters and replies fully to Mode S interrogations. Depending on transponder strapping, the transponder replies fully or does not reply to ATCRBS Mode C, Mode A, or Mode S interrogations. The TCAS defaults to TA ONLY mode (TCAS sensitivity level No.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 20. CTA-100A Control Unit Controls and Indicators (cont) Control/Indicator (See Figure 12) Function ABOVE/BELOW Pushbutton The ABOVE/BELOW pushbutton is used to set relative altitude display limits for nonthreat category aircraft on the traffic display. (NOTE 4.) RNG DN Pushbutton The RANGE pushbutton is used to set the nautical mile range scale for the TCA display.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 20. CTA-100A Control Unit Controls and Indicators (cont) Control/Indicator (See Figure 12) Function ENT Pushbutton The ENT pushbutton is for showing current Flight identification when the Flight ID mode is set in the display. The ENT pushbutton will confirm the Flight ID data entry and send the value along the ARINC 429 databus. Selection of ENT will confirm the ATC code data entry for rotary control versions of the CTA-100A.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM E. TA/VSI The TA/VSI displays resolution advisory maneuvering data to the pilot during threat conditions. The TA/VSI also supplies a display of airspace traffic conditions in the traffic display range and altitude volume limits. See Figure 13. (1) Resolution Advisories Resolution advisories can be corrective or preventive and positive or negative. A corrective advisory requires a vertical maneuver and is always shown with red and green arcs.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM TA/VSI Controls and Indicators Figure 13 34-45-47 Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 21.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM F. RA/VSI The RA/VSI shown in Figure 14 gives resolution advisories same as the TA/VSI, but does not supply a traffic display. The RA/VSI gives resolution advisories that show the vertical speeds to be avoided to keep or get safe vertical separation. An electro-mechanical pointer and vertical speed scale, which are standard VSI features, show the present vertical speed of own aircraft.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Two Flags TCAS Flag Color Description RA OFF Black RA OFF on White Shows an impairment of the TCAS function which is due to a loss of essential aircraft data, or TCAS data, indicator power OFF, TCAS in STBY mode or TCAS in TA mode. Also appears when VSI appears. NORMAL Black Shows normal operation of TCAS functions. TCAS Black TCAS on Amber Shows a loss of, or invalid digital TCAS data or SSM set to Failure Warning.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM H. PPI Radar/TCAS Display The PPI Radar/TCAS display shown in Figure 16 gives its usual separate weather radar display and can be manually controlled to show an isolated TCAS traffic display or a total weather radar/TCAS presentation. The PPI Radar/TCAS display integration into the CAS-100 system is given in isolated manuals recorded in Table Intro-1. NOTE: A pilot manual supplied by Honeywell gives the PPI Radar/TCAS display operation in detail. I.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM M. Range Selection and Range Rings The traffic advisory display range selection is controlled externally, through the data input to the display on the ARINC 429 bus, or internally, using a front panel selector switch (PPI weather/traffic display). The range selection can be controlled by optional front panel pushbutton switches (TA/VSI or dedicated traffic display).
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM ITA-81A Traffic Display Controls and Indicators Figure 15 34-45-47 Page 111/112 1 Dec 2003 Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM PPI Radar/TCAS Display Controls and Indicators Figure 16 34-45-47 Page 113/114 1 Dec 2003 Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM TESTING AND FAULT ISOLATION 1. General Fault isolation is the function to find the source of a TCAS failure at the assembly level (black box level) or the aircraft wiring level. Fault isolation for CAS-100 includes the performance of TCAS functional tests and the inspection of the TCAS failure indicators.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM There are two different procedures to start and monitor functional self test of the TCAS/Mode S system. The first is started at the transponder/TCAS control unit and the sensed failures are shown on the traffic display, but for the IVA-81A/D TA/VSI. The second procedure is started in the equipment bay using the two buttons found on the front panel of the TCAS processor, and then monitoring the TCAS Processor front panel LED display.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Test Pattern Figure 1001 2 After the RA/VSI sequence lamp test, the red and green climb/descend lamps show a set test command that shows a typical resolution advisory during the remaining test sequence. NOTE: The missing correct vertical speed input causes the VSI flag to come into the view on the RA/VSI. If a TA/VSI is used, the legend VSI comes into the view on the display.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM (3) Failure Detected During Self-Test If a failure is found during self-test, the voice message output from the TCAS processor is, TCAS System Test Fail. The PPI Radar/TCAS display or dedicated display will show the failed system component(s). Possible traffic display fault annunciations are as follows: (4) • TCAS PROCESSOR • XPNDR TOP ANT • UPPER ANTENNA • XPNDR LOWER ANT • LOWER ANTENNA • XPNDR TCAS DATA • RADIO ALT No.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM (6) Self-Test Using CTA-81( ) Indicators The following self-test data applies to the CTA-81( ) indicators: (a) Control unit ATC FAIL lamp monitors the transponder functions only. (b) On the control unit, letter R comes on in the TEST. The letter R comes on in the ATC-2 position for the aircraft that have a non-Mode S transponder. The letter R does not come on during usual Mode S operation in ATC-1 or ATC-2.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 1001. Mode S Line Maintenance Troubleshooting Procedure (Fault Indication on PPI or Dedicated Display). Fault Annunciation Remedy XPNDR TOP ANT XPNDR LOWER ANT Check: Coaxial connectors, Coax cable, Coax Switches, Coax switch circuit defective, Transponder antenna No. 1 XPNDR ALT DATA No. 2 XPNDR ALT DATA XPNDR ALT DATA No. 1 and No.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 1002. TCAS Line Maintenance Troubleshooting Procedure (Fault Indication on PPI or Dedicated Display) Fault Annunciation Remedy TCAS PROCESSOR UPPER ANTENNA LOWER ANTENNA ATTITUDE HEADING Do the TCAS processor self test (paragraph 2.C.) for specifics. TCAS FAIL/NO TCAS TRAFFIC DISPLAY PPI or dedicated display failure. RA DISPLAY No. 1 One RA DISPLAY or RADIO ALT FAULT will not show in a two system display unless other faults are shown.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM C. Using TCAS Processor Front-Panel Buttons and LCD Display NOTE: Refer to applicable Mode S transponder system maintenance manual for front-panel self tests of Mode S transponder. (1) General The TPA-100A TCAS Processor front panel contains a four-line, 16 character for each line Liquid Crystal Display (LCD) and two pushbutton controls as shown in Figure 1002. The left pushbutton is the Scroll button and the right button is the Select button.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM TCAS Processor Front Panel LCD and Pushbuttons Figure 1002 34-45-47 Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM The Figure 1003 shows a typical Main Menu screen. If the Select button is pushed, the system status menu is shown. If the Scroll button is pushed one time, the caret moves to START TEST. If the Scroll button is pushed again, the caret moves to STORED FAULTS on page 2 of the menu. (Typical Pages 1 and 2 of Menu Screen) Typical Main Menu Screen Figure 1003 NOTE: The caret is located at SYSTEM OK.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 1003.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 1003. Unit Internal Faults (cont) Internal Faults Fault Identification TRM 5 PR5 TTM min8 PTM8 TTM 3.3 ref PT3R TTM 30v ref PT30 TTM 32v e4 PT24 TTM 32v e3 PT23 TTM 32v e2 PT22 TTM 32v e1 PT21 TTM 2.5 PT25 TTM 6 PT6 TTM 3.3 PT3 TTM 6v Bias PT6B DM IO A/D Slow Conversion DA1 DM IO A/D Invalid Ground DA2 DM IO A/D Invalid 2.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 1003.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 1003.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 1004. System and Input Faults Front Panel Text Fault Description Top Ant Fail 1. TX Cal Delta 24 or 31 Top (Antenna Failure) Top Ant E1 1.1 Top Antenna Element 1 failed Top Ant E2 1.2 Top Antenna Element 2 failed Top Ant E3 1.3 Top Antenna Element 3 failed Top Ant E4 1.4 Top Antenna Element 4 failed Bott Ant Fail 2. TX Cal Delta 24 or 31 Bot (Antenna Failure) Bott Ant E1 2.1 Bottom Antenna Element 1 failed Bott Ant E2 2.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 1004. System and Input Faults (cont) Front Panel Text Fault Description FMC 16. FMC (for aircraft type not A330 and not A340) FMC 16.1 FMC (for A340 and A330) Suppression Line 17. Suppression Line TCAS Unit Failed 18. TCAS Unit Fault Power Interrupt 19. Power Supply Interrupted Program Pin 20. Program Pin 34-45-47 Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 1005.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 1005.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM The three possible results of the test are: (a) No faults (unit and system ok) (b) System or input faults (unit ok, system failed) (c) Internal faults (unit failed/system failed) To push the Select button with the caret at SYSTEM FAILED or UNIT FAILED causes a display screen with the entries that include the applicable found faults. When faults are found, START TEST is selectable and a retest is possible.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 1006.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Start Test/Test Inhibited Sample Flow Diagram Figure 1004 34-45-47 Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM (5) Stored Faults To push the Select button when STORED FAULTS (see main menu Figure 1003) is the active selectable item, causes the Stored Faults screen to be shown (Figure 1005). The fault data is shown five legs back from the most recent fault to the oldest fault. The title of the Stored Fault Display shows in which leg the stored fault is found. The title shows the current leg minus the number of legs to where the fault is kept.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Stored Faults LCD Screen Example Figure 1006 34-45-47 Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM (6) Configuration Display Screen To push the Select button when the Configuration is the Active Selectable Item on the Menu screen causes the Configuration Screen to come into the view. A representation of a two page Configuration screen is shown in Figure 1007. The screen title is CONFIG. The lines two, three, and four of page 1/2 contain the software part number(s). To push the Scroll button causes page 2/2 of the CONFIG screen to come into the view.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM (7) Inputs Display Screen To push the Select button when Input is the Active Selectable Item on the Menu Screen causes the Input select screen page 1/3 to come into the view. See Figure 1008. Refer to Table 1007 for Program Pin displayed text and fault descriptions.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 1007.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 1007. Program Pins (cont) Program Pin Display Text PP RBP 8A On Ground Audio Level No. 1 PP RBP 8B On Ground Audio Level No. 2 PP RBP 8C On Ground Audio Level No. 3 PP RBP 8E Self Test Inhibit Fault Description Ground Audio Level Program Pins find the speaker and phones audio level output when the aircraft is on the ground by strapping one or more Ground Audio Level Program Pins to Program Pin Common RBP7K.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM (b) Discretes Display Screen Figure 1009 is an example of a Discrete screen. The line 1 contains the screen title, the line 2 shows the pin number followed by Open or Ground. The lines 3 and 4 are reserved for the name of the discrete. On the last Discrete page the Active Selectable Item GO BACK is shown. Table 1008 lists the discrete pins, the text shown, and a short description of the discrete.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 1008. Discrete Pin Numbers Discrete Pin Number Display Text Discrete Description RBP5A Advisory Inhibit 1 RBP5B Advisory Inhibit 2 RBP5C Advisory Inhibit 3 The four input to TCAS prevent annunciations when more important events occur. The source of the four input are Input 1, Aircraft System; Input 2, Windshear System 1; Input 3, Windshear 2; Input 3, EGPWC. RBP5D Advisory Inhibit 4 See Table 1009.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 1008. Discrete Pin Numbers (cont) Discrete Pin Number RMP5K Display Text Air/Ground 1 Discrete Description The Air/Ground Discrete Input for the Air/Ground relay. The normal failure mode is the airborne condition.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM Table 1009. Advisory Inhibit and TCAS Mode Data No.1 1 0 0 0 0 Advisory Inhibit No.2 No.3 X X 1 X X 1 X X 0 0 No.4 X X X 1 0 TCAS Mode Standby (SL=1) TA Only (SL=2) TA Only (SL=2) TA Only (SL=2) Normal Where 0 = Open 1 = Ground X = Don't care NOTE: Advisory Inhibit 1 has precedence over the other Advisory Inhibit input.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM 1 Digital Radio Altitude The Figure 1010 shows an example of a Digital Radio Altitude screen. The line 2 shows the correct radio altitude from the No. 1 digital data source. The plus (+) sign in position 16 of line 2 shows that Altitude No. 1 source is the active input. If the Altitude No. 1 data was incorrect, then INVALID would be shown on the line two. The line 3 shows the Altitude No. 2 data in the same procedure that line 2 shows the Altitude No.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM 3 Pressure Altitude The pressure altitude data is supplied to TCAS from the transponder through XT Coordination No. 1 and No. 2 ARINC 429 data bus (Data Word Label 203). The Figure 1012 shows a sample Pressure Altitude screen. The line two contains the altitude data from XT Coordination No. 1 pressure altitude data source. In this example the data source is correct (altitude = 2400 ft.) and the plus sign shows that the XPDR No. 1 is the active source.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM 5 Pitch An example of a Pitch display screen is shown in Figure 1014. The line two shows the data from ARINC 429 Mag Heading/Allotted data bus (label 324). The (+) shows that source is the active source. If the Pitch data from the 429 data source is not correct, then line two can show INVALID. The line three shows the data from a Pitch attitude synchro. In this case the data is correct.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM 7 Climb Inhibit An example of a Climb Inhibit display screen is shown in Figure 1016. The second line shows if climb is inhibited or not (yes or no). The line three shows if increased climb is inhibited (yes or no). Climb Inhibit Display Screen Example Figure 1016 8 Air/Ground and Landing Gear An example of an Air/Ground and Landing Gear display screen is shown in Figure 1017.
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MAINTENANCE MANUAL CAS-100 COLLISION AVOIDANCE SYSTEM (d) Mode-S Address To push the Select button when Mode-S Address is the Active Selectable Item on the Input screen causes the Mode-S Address display screen to display. The Figure 1018 shows an example of the Mode-S Address screen. Line two shows the hexadecimal address of transponder No. 1 received from XT Coordination No. 1 (pins RMP 14F and RMP 14G) ARINC 429 data bus (labels 275 and 276).