Failure of Two IRs

TASK 27-93-00-810-928-A
Failure of Two IRs

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 34-14-00-740-001	Interface Test of the IR

3. Fault Confirmation
Subtask 27-93-00-700-158-A

A. Test
Not applicable.

4. Fault Isolation
Subtask 27-93-00-810-171-A

A. This warning is shown after a double IR failure.
To do the trouble shooting refer to the POST FLIGHT REPORT and start the trouble shooting from the first NAV IR FAULT warning and its related maintenance message.
After this step, on the upper ECAM DU the F/CTL IR DISAGREE will go out of view and be replaced by NAV IR FAULT warning with a related message. Do the Interface test of the IR AMM 34-14-00-740-001.
Do the trouble shooting procedure related to this maintenance message.

[Rev.8 from Aug 2018] 2026.04.04 04:28:07 UTC