Fan Air Valve of the Engine 1 Failed

TASK 36-11-00-810-986-A
Fan Air Valve of the Engine 1 Failed

1. Possible Causes

VALVE-FAN AIR, ENG1 [9HA1]
wiring

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 36-11-00-740-802	BITE Test of the Engine Bleed Air System (EBAS) (System Test)
ASM 361101
AMM 36-11-54-000-802	Removal of the Fan Air-Valve Actuator
AMM 36-11-54-400-802	Installation of the Fan Air-Valve Actuator
AMM 36-11-54-720-804	Functional Test of the Opening of the Fan Air Valve with the Bleed Test Set P/N 98D36109001000

3. Fault Confirmation
Subtask 36-11-00-740-087-A ** ON A/C NOT FOR ALL

A. Test
(1) Do the Bite test of the EBAS AMM 36-11-00-740-802.

4. Fault Isolation
Subtask 36-11-00-810-364-A ** ON A/C NOT FOR ALL

A. If the fault is identified by the maintenance message FAN AIR-V (9HA1):
(1) Do a functional test of the Fan Air Valve (9HA1) AMM 36-11-54-720-804.
(2) If the test confirms the fault:
(a) Replace the VALVE-FAN AIR, ENG1 [9HA1] AMM 36-11-54-000-802 and AMM 36-11-54-400-802.
(3) Do the test given in Para. 3.

Subtask 36-11-00-810-365-A ** ON A/C NOT FOR ALL

B. If the fault continues:
(1) Do a check of the wiring from Fan Air Valve (9HA1) pin A/1 and A/2 to BMC1 (1HA1) pin AB/12C and AB/12B ASM 361101.
(2) If the wiring is damaged:
(a) Repair or replace the wiring .

Subtask 36-11-00-810-366-A ** ON A/C NOT FOR ALL

C. If the fault continues:
(1) Do a check of the wiring from Fan Air Valve (9HA1) pin A/1 and A/2 to BMC2 (1HA2) pin AB/13C and AB/13B ASM 361101.
(2) If the wiring is damaged:
(a) Repair or replace the wiring .

Subtask 36-11-00-810-675-A ** ON A/C NOT FOR ALL

D. If the fault continues:
(1) Do a check and repair the wiring between pin A/3 of the Fan Air Valve (9HA1) and the ground terminal.

[Rev.8 from Aug 2018] 2026.04.04 04:33:54 UTC