Fan of the RA Transceiver 1 Inoperative

TASK 34-42-00-810-822-A
Fan of the RA Transceiver 1 Inoperative

1. Possible Causes

XCVR-RA, 1 [2SA1]
FAN-RA XCVR1 [3SA1]
wiring between the fan of the RA transceiver 1 (3SA1) and the RA transceiver 1 (2SA1)

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 34-42-00-750-001	Operational Test and Detailed Inspection for Contamination of the Radio Altimeter Fan
ASM 344201
AMM 34-42-33-000-001	Removal of the Radio Altimeter Transceiver
AMM 34-42-33-400-001	Installation of the Radio Altimeter Transceiver
AMM 34-42-45-000-001	Removal of the Radio Altimeter-Transceiver Fan
AMM 34-42-45-400-001	Installation of the Radio Altimeter-Transceiver Fan

3. Fault Confirmation
Subtask 34-42-00-700-050-A

A. Test
(1) Do the fan test of the radio altimeter AMM 34-42-00-750-001.

4. Fault Isolation
Subtask 34-42-00-810-073-A

A. If the fan does not operate correctly:

(1) If the fault continues:

(a) If the fault continues:

do a check and repair the wiring between the fan of the RA transceiver 1 (3SA1) and the RA transceiver 1 (2SA1) ASM 344201.

Subtask 34-42-00-700-051-A

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:33:09 UTC