Test of coaxial cables and replacement of antennas for the Radio-Altimeter side RA2 (2SA2)

TASK 34-42-00-810-850-A
Test of coaxial cables and replacement of antennas for the Radio-Altimeter side RA2 (2SA2)

1. Possible Causes

ANTENNA-RA RCPTN, 2 [5SA2]
ANTENNA-RA XMSN, 2 [6SA2]
coaxial cables between the RA transceiver 2 (2SA2) and the radio altimeter antennas

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
ESPM 2053230
ASM 344202
AMM 34-42-11-000-001	Removal of the Radio Altimeter Antenna
AMM 34-42-11-400-001	Installation of the Radio Altimeter Antenna

3. Fault Confirmation
Subtask 34-42-00-700-059-A

A. Not applicable, you cannot confirm this fault on the ground.

4. Fault Isolation
Subtask 34-42-00-810-122-A

CAUTION: DO NOT INTERCHANGE THE RA TRANSCEIVERS FOR THE NEXT FLIGHT. THE FAULT DETECTED WILL REMAIN.

A. Do the step(s) as follow(s):
Troubleshooting installation of the Radio-Altimeter side RA2 (2SA2):

Remove the ANTENNA-RA RCPTN, 2 [5SA2] and the ANTENNA-RA XMSN, 2 [6SA2] AMM 34-42-11-000-001.

(1) If you find signs of water on the connectors and coaxial cables of the antennas: dry them.
(2) Make sure that the coaxial cables between the RA transceiver 2 (2SA2) and the radio altimeter antennas are in correct condition (no corrosion) ASM 344202: Pin AA/C and pin AB/C.
(a) If the antenna coaxial cables are not in correct condition:

Repair or replace if necessary the defective coaxial cables ESPM 2053230.
Install a new ANTENNA-RA RCPTN, 2 [5SA2] and a new ANTENNA-RA XMSN, 2 [6SA2] AMM 34-42-11-400-001.

(b) If the antenna coaxial cables are in correct condition:

Install a new ANTENNA-RA RCPTN, 2 [5SA2] and a new ANTENNA-RA XMSN, 2 [6SA2] AMM 34-42-11-400-001.

[Rev.8 from Aug 2018] 2026.04.04 04:33:11 UTC