Installation of the Duct Temperature Sensor (Inlet Duct)

TASK 21-43-14-400-002-A
Installation of the Duct Temperature Sensor (Inlet Duct)

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

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
131MW, 825

C. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
3	O-RING	AIPC 21-43-02-03-010

D. Referenced Information

REFERENCE	DESIGNATION
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 24-42-00-862-001-A	De-energize the Ground Service Network Supplied 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 21-43-14-860-050-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that the ground service network is energized
(Ref. AMM TASK 24-42-00-861-001).

Subtask 21-43-14-010-052-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Make sure that the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE is in position at the FWD cargo door 825.
(2) Make sure that the FWD cargo access door 825 is open (Ref. AMM TASK 52-30-00-860-001).
(3) Make sure that the access panel 131MW is removed.

Subtask 21-43-14-865-052-A ** ON A/C NOT FOR ALL

C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

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

4. Procedure
Subtask 21-43-14-420-050-A ** ON A/C NOT FOR ALL

A. Installation of the Duct Temperature Sensor
(1) Make sure that the parts retained from the removed component are clean and in the correct condition.
(2) Clean the component interfaces and the adjacent area.
(3) Install the duct temperature sensor (2) and the AIPC 21-43-02-03-010 O-RING (3) in the inlet duct (4).
(4) Make sure that all the electrical connections are clean and in the correct condition.
(5) Remove the CAP-BLANKING from each electrical connector and receptacle.
(6) Connect the electrical connector (1) to the duct temperature sensor (2).

5. Close-up
Subtask 21-43-14-865-053-A ** ON A/C NOT FOR ALL

A. Remove the safety clip(s) and the tag(s) and close 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 21-43-14-410-050-A ** ON A/C NOT FOR ALL

B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the access panel 131MW.
(3) Close the FWD cargo door 825.
(4) Remove the access platform(s).

Subtask 21-43-14-862-050-A ** ON A/C NOT FOR ALL

C. De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).

[Rev.10 from 2021] 2026.04.02 06:11:19 UTC