Loss of the Attitude Data on the ISIS Indicator

TASK 34-22-00-810-804-A
Loss of the Attitude Data on the ISIS Indicator

1. Possible Causes

IND-ISIS [22FN]

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 34-22-25-000-001	Removal of the ISIS Indicator
AMM 34-22-25-400-001	Installation of the ISIS Indicator

3. Fault Confirmation
Subtask 34-22-00-700-050-A ** ON A/C NOT FOR ALL

A. Test
Not applicable, you cannot confirm this fault on the ground.

4. Fault Isolation
Subtask 34-22-00-810-054-A ** ON A/C NOT FOR ALL

A. If the fault symptom is identified by the maintenance message on the face of the ISIS indicator:
ISIS(22FN-10FC) ATTITUDE FUNCTION
and by the red flag on the face of the ISIS indicator:
ATT

replace the IND-ISIS [22FN] AMM 34-22-25-000-001 AMM 34-22-25-400-001.

[Rev.8 from Aug 2018] 2026.04.04 04:32:55 UTC