User guide
Table Of Contents
- Record of Revisions
- Service Bulletin List
- List of Effective Pages
- Table of Contents
- List of Figures
- Introduction
- Description and Operation
- Test and Fault Isolation
- 1. Inspection and Test Regulatory Requirements
- 2. Inspection and Test Procedures
- A. Checklist
- B. Preparation
- C. Coax Cable and Wiring Connections Inspection – Item 1
- D. Mounting Tray and Hardware Inspection – Item 2
- E. Battery Pack Inspection – Item 3
- F. G-Switch Functional Check – Item 4
- G. Performance Testing Setup
- H. 121.5 MHz Frequency Measurement – Item 5a
- I. Audio Modulation Check – Item 5b
- J. 121.5 MHz Power Output Measurement – Item 5c
- K. 406 MHz Frequency Measurement – Item 5d
- L. 406 MHz Power Output Measurement – Item 5e
- M. Current Draw Test – Item 5f
- N. Digital Message Verification – Item 5g
- O. ELT Reset Check – Item 5h
- P. Installed Transmitter Test – Item 6
- Q. Antenna Test – Item 7
- R. Inspection and Test Documentation – Item 8
- 3. Fault Isolation
- Removal
- Installation
- 1. Regulatory Requirements and Guidelines
- 2. Mounting Tray
- 3. Antenna
- 4. Remote Switch
- 5. Buzzer
- 6. Wiring
- A. General Considerations and Recommendations
- B. Remote Switch Harness Fabrication
- C. ELT D-Sub Plug Installation
- D. Cockpit Remote Switch 9-Pin Plug Installation
- E. Wiring Installation
- F. Antenna Connection
- G. Cockpit Remote Switch Power Connection
- H. Remote Switch Alternate Power Source
- I. Airframe Ground Connections
- J. Buzzer Connections
- K. Remote Switch Final Installation
- 7. ELT Installation
- 8. Battery Pack Installation
- 9. Helicopter Installations - Special Considerations
- Appendix A – ELT Registration
- Illustrated Parts List
25-62-30
Page 41 of 84
Jun 25/13
ARTEX PRODUCTS / ACR ELECTRONICS, INC
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
ME406 (453-6603), ME406HM (453-6604)
(5) Activate the ELT by placing the cockpit remote switch in the “ON” position. The LED will begin
flashing continuously.
(6) Listen for 3 audible sweeps on the receiver, which takes about 1 second.
(7) Verify the buzzer sounds immediately upon activation.
(8) Return the cockpit remote switch to the “ARM” (off) position while paying close attention to
LED activity when the ELT enters the “ARM” condition. If the ELT is working properly, the LED
will stay on for approximately 1 second and then turn off.
NOTE
: This test also completes the requirement to check ELT controls by verifying operation
of the remote switch.
(9) Refer to Table 6 on page 42 if the LED displays a series of error code flashes.
SUBTASK 25-62-30-750-012
Q. Antenna Test – Item 7
CAUTION
: DO NOT ALLOW THE DURATION OF THIS TEST TO EXCEED 5 SECONDS.
(1) Tune a low quality AM receiver (i.e., radio) to 121.5 MHz.
NOTE
: The aircraft transceiver is not recommended for this test, because it is too sensitive
to verify the integrity of the antenna system and it may pick up a weak signal even if
the antenna is disconnected from the ELT. An AM radio provides a better level of
confidence for this test.
(2) Place the radio approximately six inches from the antenna.
(3) Activate the ELT by placing the cockpit remote switch in the “ON” position.
NOTE
: Perform this test within the first five minutes after the hour UTC.
(4) Listen for 3 audible sweeps on the radio, which takes about 1 second. An audible signal
verifies energy is being transmitted by the antenna.
(5) Reset the ELT by placing the cockpit remote switch in the “ARM” position.
NOTE
: The ELT contains an internal self test function that executes upon deactivation of the
ELT. This self test function is designed to test the integrity and radiated power of the
ELT, coax cable, and antenna. If no LED error codes are displayed after deactivation
of the ELT, it is in compliance with FAR Section 91.207 subsection d paragraph (4).
SUBTASK 25-62-30-750-013
R. Inspection and Test Documentation – Item 8
(1) Make an appropriate entry in the aircraft maintenance records (i.e., logbook), including the
date the ELT inspection and testing was satisfactorily completed.
(2) In addition to the requirements of Step 1, for aircraft operating under Canadian authority and
following satisfactory completion of performance testing, the date on which the test was
performed shall be marked on the ELT external casing in a legible and permanent manner.