Loss of the ADIRU1 Data on the MMR2

TASK 34-36-00-810-857-A
Loss of the ADIRU1 Data on the MMR2

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 34-12-34-000-001	Removal of the ADIRU
AMM 34-12-34-400-001	Installation of the ADIRU
AMM 34-36-00-740-003	BITE Test of the MMR
ASM 343602
AMM 34-36-31-000-001	Removal of the ILS Receiver
AMM 34-36-31-400-001	Installation of the ILS Receiver

3. Fault Confirmation
Subtask 34-36-00-740-130-A

A. Test
Do the BITE test of the MMR2 AMM 34-36-00-740-003.

4. Fault Isolation
Subtask 34-36-00-810-121-A

A. If the test gives the maintenance message ADIRU1(1FP1)/MMR2(40RT2):

swap the ADIRU-1 [1FP1] and the ADIRU-3 (1FP3) AMM 34-12-34-000-001 and AMM 34-12-34-400-001.

(1) If the test gives the maintenance message ADIRU3(1FP3)/MMR2(40RT2):

(2) If the fault continues:

swap the MMR-2 [40RT2] and the MMR-1 (40RT1) AMM 34-36-31-000-001 and AMM 34-36-31-400-001.
do the BITE test of the MMR1 AMM 34-36-00-740-003.

(a) If the test gives the maintenance message ADIRU2(1FP2)/MMR1(40RT1):

(b) If the fault continues:

do a check and repair the wiring between the ADIRU1 and the MMR2 for pins AB/10C, 11C and AB/4E, 4F ASM 343602.

Subtask 34-36-00-740-131-A

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:33:01 UTC