Outflow Valve does not operate during the Emergency Ram Air Configuration

TASK 21-31-00-810-823-A
Outflow Valve does not operate during the Emergency Ram Air Configuration

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 21-31-00-710-005	Operational Test of Outflow Valve Partial Opening by Emergency Ram Air Switch
ASM 213102

3. Fault Confirmation
Subtask 21-31-00-710-094-A

A. Do the operational test of the outflow opening (50 deg.) by emergency ram air switch AMM 21-31-00-710-005.

4. Fault Isolation
Subtask 21-31-00-810-126-A

A. If the outflow valve does not close to approx. 50 deg:

(1) If the fault continues:

do a check and repair the wiring between:
.the RAM AIR pushbutton switch (4HZ) and the CPC 1 (11HL) AA/5B,
.the RAM AIR pushbutton switch (4HZ) and the CPC 2 (12HL) AA/5B,
.the RAM AIR pushbutton switch (4HZ) and the GND,

Subtask 21-31-00-710-095-A

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:24:42 UTC