Failure of the ADIRU Detected by the IGGS

TASK 47-11-00-810-810-A
Failure of the ADIRU Detected by the IGGS

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 34-13-00-740-003	SYSTEM TEST of the ADR
ASM 471101
AMM 47-31-34-000-001	Removal of the IGGS Controller Unit
AMM 47-31-34-400-001	Installation of the IGGS Controller Unit
AMM 47-31-34-740-001	BITE Test of the IGGS with Bleed Air

3. Fault Confirmation
Subtask 47-11-00-710-050-A ** ON A/C NOT FOR ALL

A. Do the BITE test of the IGGS without bleed air AMM 47-31-34-740-001.

4. Fault Isolation
Subtask 47-11-00-810-059-A ** ON A/C NOT FOR ALL

A. Do the system test of the ADR AMM 34-13-00-740-003.
(1) If the test is not successful:

(2) If the test is successful:

(3) Do the test as given in the Para. 3.
(4) If the fault continues
(a) do a check and repair the:

wiring from ADIRU-1 [1FP1] pin TP/7A to IGGS CTL UNIT [1YA] pin A/112
wiring from ADIRU-1 [1FP1] pin TP/7B to IGGS CTL UNIT [1YA] pin A/113 ASM 471101.

Subtask 47-11-00-710-051-A ** ON A/C NOT FOR ALL

B. Do the test as given in the Para. 3.

NOTE: After the subsequent flight make sure that the fault does not continue.

[Rev.8 from Aug 2018] 2026.04.04 04:34:23 UTC