Loss of the ADM BUS 1 Input Data to the ADIRU 2

TASK 34-11-00-810-807-A
Loss of the ADM BUS 1 Input Data to the ADIRU 2

1. Possible Causes

ADM-R TOTAL PRESSURE [19FP2]
ADIRU-2 [1FP2]
wiring of the ADM BUS 1 INPUT bus from the R total pressure ADM (19FP2) to the ADIRU 2 (1FP2)

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 34-11-17-000-001	Removal of the Air Data Module
AMM 34-11-17-400-001	Installation of the Air Data Module
AMM 34-12-34-000-001	Removal of the ADIRU
AMM 34-12-34-400-001	Installation of the ADIRU
AMM 34-13-00-740-002	INTERFACE TEST of the ADR
ASM 341303

3. Fault Confirmation
Subtask 34-11-00-740-062-A

A. Test
Do the Interface test of the ADR (system 2) AMM 34-13-00-740-002.

4. Fault Isolation
Subtask 34-11-00-810-056-B

A. If the test gives the maintenance message ADM2 (19FP2)/ADIRU2 (1FP2):

(1) If the fault continues:

(a) If the fault continues:

do a check and repair the wiring of the ADM BUS 1 INPUT bus from the R total pressure ADM (19FP2) to the ADIRU 2 (1FP2) ASM 341303.

Subtask 34-11-00-740-063-A

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:32:14 UTC