Technical data

13773-001

34-30

Page 1

LANDING AIDS

1. DESCRIPTION

This section covers that portion of the system which provides guidance during approach, landing, and taxi-

ing. This includes glideslope and marker beacon systems. (See Figure 34-001)

2. MAINTENANCE PRACTICES

A. Garmin GNS 430 GPS/COM/NAV

The GNS 430 is an IFR certified VHF communications transceiver and Navigation Management Sys-

tem (NMS). The NMS includes GPS sensor, VOR/Localizer and Glideslope receivers. The GNS 430

includes two removable data cards, one with a Jeppesen data base, and second being a custom data

card. GPS signals are received by Garmin’s low-profile GA 56 antenna. For installation and removal

procedures refer to Position Determining. (Refer to 34-40)

B. Marker Beacon

The marker beacon, integrated into the audio panel located in the avionics console, provides annunci-

ation and audio indications necessary for ILS approach. Refer to 23-50 for audio control panel mainte-

nance practices. The marker beacon antenna is mounted inside the fuselage, under the baggage

compartment floor, right of access panel. Refer to GMA 340 Audio Control Panel Installation and Oper-

ation Manual listed in the front of this manual for additional maintenance information on the marker

beacon system. (Refer to 23-50)

C. Marker Beacon Antenna (See Figure 34-301)

(1) Removal - Marker Beacon Antenna

(a) Remove baggage compartment floor covering. (Refer to 25-10)

(b) Remove access panel CF5 from baggage compartment floor. (Refer to 6-00)

(d) While supporting antenna assembly, remove screws countersunk into baggage compart-

ment floor securing mounting bracket to underside of floor.

(e) Remove antenna assembly from airplane.

(2) Installation - Marker Beacon Antenna

(a) Align antenna bracket mounting holes with baggage floor hardpoint holes and install coun-

tersunk screws.

(b) Connect coaxial cable to antenna connector.

(d) Install baggage compartment floor covering. (Refer to 25-10)

30 Nov 2000