Invalid Data Received from RA 2 to ADR 2

TASK 34-13-81-810-879-A
Invalid Data Received from RA 2 to ADR 2

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
ESPM 2053230
AMM 34-13-00-740-003	SYSTEM TEST of the ADR
ASM 344202
AMM 34-42-33-000-001	Removal of the Radio Altimeter Transceiver
AMM 34-42-33-400-001	Installation of the Radio Altimeter Transceiver

3. Fault Confirmation
Subtask 34-13-81-740-179-A ** ON A/C NOT FOR ALL

A. Test
Do the system test of the ADR 2 AMM 34-13-00-740-003.

4. Fault Isolation
Subtask 34-13-81-810-131-A ** ON A/C NOT FOR ALL

A. If the test gives the maintenance message RA2(2SA2):

(1) If the fault continues:

remove the RA transceiver 2 (2SA2) AMM 34-42-33-000-001.
do a check and replace if necessary the coaxial cable from the RA transceiver 2 (2SA2) (pin AA/C) and the RA reception antenna (5SA2) ASM 344202 ESPM 2053230.
do a check and replace if necessary the coaxial cable from the RA transceiver 2 (2SA2) (pin AB/C) and the RA transmission antenna (6SA2) ASM 344202 ESPM 2053230.
install the RA transceiver 2 (2SA2) AMM 34-42-33-400-001.

Subtask 34-13-81-740-180-A ** ON A/C NOT FOR ALL

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:32:40 UTC