Fan Air Valves of the Engine 1 and Engine 2 Blocked in the Open Position

TASK 36-11-00-810-870-A
Fan Air Valves of the Engine 1 and Engine 2 Blocked in the Open Position

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TSM TASK 36-11-00-810-849-A	Fan Air Valve of the Engine 1 Blocked in the Open Position
TSM TASK 36-11-00-810-850-A	Fan Air Valve of the Engine 2 Blocked in the Open Position
AMM 36-11-54-720-001	Functional Test of the Opening of the Fan Air Valve 9HA1 with the Bleed Test Set P/N 98D36003000000

3. Fault Confirmation
Subtask 36-11-00-710-188-A ** ON A/C NOT FOR ALL

A. Test
(1) Do the test of the fan air valve AMM 36-11-54-720-001.

4. Fault Isolation
Subtask 36-11-00-810-120-B ** ON A/C NOT FOR ALL

A. If the test gives the maintenance messages:
FAN AIR V 9HA1 OR THRM 7170HM1 and
FAN AIR V 9HA2 OR THRM 7170HM2:

do the trouble shooting procedures (Ref. TSM TASK 36-11-00-810-849) and (Ref. TSM TASK 36-11-00-810-850).

Subtask 36-11-00-810-120-C ** ON A/C NOT FOR ALL

A. If the test gives the maintenance messages:
THRM 7170HM1 OR FAN AIR-V 9HA1 and
THRM 7170HM2 OR FAN AIR-V 9HA2:

do the trouble shooting procedures (Ref. TSM TASK 36-11-00-810-849) and (Ref. TSM TASK 36-11-00-810-850).

[Rev.8 from Aug 2018] 2026.04.04 04:33:46 UTC