Removal of the Duct Temperature Sensor (Inlet Duct)

TASK 21-43-14-000-002-A
Removal of the Duct Temperature Sensor (Inlet Duct)

WARNING: MAKE SURE THAT AIR IS NOT SUPPLIED TO THE AIR CONDITIONING SYSTEM FROM THE MAIN ENGINE, THE APU OR A GROUND SOURCE. HOT COMPRESSED AIR CAN CAUSE INJURY TO PERSONNEL.

FIN: 3HC ** ON A/C NOT FOR ALL

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific	AR	CAP - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
131MW, 825

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 52-30-00-860-001-A	Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
Duct Temperature Sensor (Inlet Duct)

3. Job Set-up
Subtask 21-43-14-861-050-A ** ON A/C NOT FOR ALL

A. Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).

Subtask 21-43-14-865-051-A ** ON A/C NOT FOR ALL

B. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	AIR COND/FWD CARGO/VENT/CTL & MONG	2HN	C08

Subtask 21-43-14-010-050-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position at the FWD cargo door 825.
(2) Open the FWD cargo access door 825 (Ref. AMM TASK 52-30-00-860-001).
(3) Remove the access panel 131MW.

4. Procedure
Subtask 21-43-14-020-050-A ** ON A/C NOT FOR ALL

A. Removal of the Duct Temperature Sensor
(1) Disconnect the electrical connector (1) from the duct temperature sensor (2).
(2) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(3) Remove the duct temperature sensor (2) from the inlet duct (4).
(4) Remove the O-ring (3).

[Rev.10 from 2021] 2026.04.02 06:48:20 UTC