Failure of the Bleed Pressure Sensor of Engine 1

TASK 36-11-00-810-982-A
Failure of the Bleed Pressure Sensor of Engine 1

1. Possible Causes

XDCR-BLEED REGULATED PRESS, ENG 1 [8HA1]
sense line

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 36-11-16-000-802	Removal of the Bleed Regulated Pressure-Transducer
AMM 36-11-16-400-802	Installation of the Bleed Regulated Pressure-Transducer
AMM 36-11-16-720-802	Functional Test of the Bleed Regulated Pressure-Transducer with the Bleed Test Set P/N 98D36109001000
AMM 36-11-49-000-823	Removal of the Environmental Control System (ECS) Sense Lines
AMM 36-11-49-000-832	Removal of the Sense Lines of the Bleed Regulated Pressure-Transducer and the Bleed Transferred Pressure-Transducer
AMM 36-11-49-400-823	Installation of the Environmental Control System (ECS) Sense Lines
AMM 36-11-49-400-832	Installation of the Sense Lines of the Bleed Regulated Pressure-Transducer and the Bleed Transferred Pressure-Transducer
AMM 36-22-00-790-802	Leak Check on all the Bleed Air Ducts and Packs Components

3. Fault Confirmation
Subtask 36-11-00-710-450-A ** ON A/C NOT FOR ALL

A. Not applicable

4. Fault Isolation
Subtask 36-11-00-810-354-A ** ON A/C NOT FOR ALL

A. If the fault symptom is idenfied by the maintenance message REG-PRESS XDRC (8HA1)/SENSE LINE:
(1) Do the functional test of the bleed regulated pressure-transducer AMM 36-11-16-720-802.
(2) If the test is not OK:

Replace the XDCR-BLEED REGULATED PRESS, ENG 1 [8HA1] AMM 36-11-16-000-802 and AMM 36-11-16-400-802.

Subtask 36-11-00-810-356-A ** ON A/C NOT FOR ALL

B. If the fault continues:
(1) Replace the sense line of the bleed regulated pressure-transducer AMM 36-11-49-000-823 AMM 36-11-49-400-823 and AMM 36-11-49-000-832 AMM 36-11-49-400-832.
(2) Do a leak check of the sense line AMM 36-22-00-790-802.

Subtask 36-11-00-710-451-A ** ON A/C NOT FOR ALL

C. Test
(1) After the subsequent flight, make sure that the fault does not continue.

[Rev.8 from Aug 2018] 2026.04.04 04:33:52 UTC