AFT Cargo-Compartment Trim-Air Pressure Regulating Fault

TASK 21-43-00-810-812-A
AFT Cargo-Compartment Trim-Air Pressure Regulating Fault

1. Possible Causes

AFT CARGO PRESS REG VALVE [11HC]

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 21-43-00-710-003	Operational Test of the AFT Cargo Compartment Heating System
AMM 21-43-52-000-001	Removal of the Pressure Regulating Valve - Aft Cargo-Compartment Heating
AMM 21-43-52-400-001	Installation of the Pressure Regulating Valve - Aft Cargo-Compartment Heating

3. Fault Confirmation
Subtask 21-43-00-720-050-A

A. Do the operational test of the AFT cargo-compartment Ventilation system AMM 21-43-00-710-003.

NOTE: During this test, monitor the position of the trim-air pressure-regulating valve (11HC) on the ECAM.

4. Fault Isolation
Subtask 21-43-00-810-062-A

A. If the temperature in the AFT cargo compartment is lower than the selected temperature and the AFT cargo-compartment pressure-regulating valve-symbol on ECAM is closed (green):

replace the AFT CARGO PRESS REG VALVE [11HC] AMM 21-43-52-000-001 and AMM 21-43-52-400-001.

Subtask 21-43-00-710-073-A

B. Do the test as given in the Para. 3.A.

5. Close-up
Subtask 21-43-00-860-061-A

A. Put the aircraft back to its initial configuration.

[Rev.8 from Aug 2018] 2026.04.04 04:24:45 UTC