Loss of the FCU Inputs on the ADIRU1

TASK 34-13-00-810-941-A
Loss of the FCU Inputs on the ADIRU1

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

3. Fault Confirmation
Subtask 34-13-00-740-251-A

A. Test
Do the Interface test of the ADR (system 1) AMM 34-13-00-740-002.

4. Fault Isolation
Subtask 34-13-00-810-194-A ** ON A/C NOT FOR ALL

A. If the BITE test gives the maintenance message FCU (3CA):

Subtask 34-13-00-810-194-B ** ON A/C NOT FOR ALL

A. If the BITE test gives the maintenance message FCU (3CA) EIS CP-L BUS or FCU (3CA) EIS CP-R BUS:

Subtask 34-13-00-740-252-A

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:32:30 UTC