Cabin Pressure Controller 1 Fault

TASK 21-31-00-810-801-A
Cabin Pressure Controller 1 Fault

1. Possible Causes

PRESS CONT 1 [11HL]

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 21-31-00-710-002	Operational Test of the Pressure Control and Monitoring
AMM 21-31-34-000-001	Removal of the Cabin Pressure Controller
AMM 21-31-34-400-001	Installation of the Cabin Pressure Controller

3. Fault Confirmation
Subtask 21-31-00-710-050-A

A. Test
(1) Do the operational test of the pressure control and monitoring system AMM 21-31-00-710-002.

4. Fault Isolation
Subtask 21-31-00-810-128-A

A. If one or more of these reports, LAST LEG REPORT, PREVIOUS LEG REPORT and CLASS 3 REPORT and/or the test gives one of the maintenance messages which follow:

PRESS CONTROLLER 1 (00) or,
PRESS CONTROLLER 1 (01) or,
PRESS CONTROLLER 1 (08) or,
PRESS CONTROLLER 1 (12) or,
PRESS CONTROLLER 1 (13) or,
PRESS CONTROLLER 1 (18) or,
PRESS CONTROLLER 1 (22) or,
PRESS CONTROLLER 1 (34) or,
PRESS CONTROLLER 1 (36) or,
PRESS CONTROLLER 1 (37) or,
PRESS CONTROLLER 1 (38) or,
PRESS CONTROLLER 1 (39) or,
PRESS CONTROLLER 1 (40) or,
PRESS CONTROLLER 1 (41) or,
PRESS CONTROLLER 1 (42) or,
PRESS CONTROLLER 1 (43) or,
PRESS CONTROLLER 1 (45) or,
PRESS CONTROLLER 1 (46) or,
PRESS CONTROLLER 1 (47) or,
PRESS CONTROLLER 1 (48) or,
PRESS CONTROLLER 1 (49) or,
PRESS CONTROLLER 1 (53) or,
PRESS CONTROLLER 1 (58) or,
PRESS CONTROLLER 1 (61),
replace the PRESS CONT 1 [11HL] AMM 21-31-34-000-001 and AMM 21-31-34-400-001.

Subtask 21-31-00-710-058-A

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

[Rev.8 from Aug 2018] 2026.04.04 04:24:40 UTC