Operational Test of the Individual Air Outlet

TASK 21-21-00-710-002-A
Operational Test of the Individual Air Outlet

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: 4056HM
FIN: 4200HM ** ON A/C NOT FOR ALL

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)

3. Job Set-up
Subtask 21-21-00-860-057-A

A. Aircraft Maintenance Configuration
(1) Energize the electrical circuits (Ref. AMM TASK 24-41-00-861-002)

Subtask 21-21-00-865-057-A

B. Make sure that this(these) circuit breaker(s) is(are) closed:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
122VU	AIR COND/RECIRC FAN/R/SPLY	3HG	W18
122VU	AIR COND/RECIRC FAN/L/SPLY	1HG	X18

4. Procedure
Subtask 21-21-00-710-053-A

A. Do the operational test of the individual air outlet
(1) Open the applicable air outlet:
(a) Put your hand at the air outlet and make sure that you feel a continuous airflow.
(2) If there is no airflow:
(a) Make sure that the adjacent cabin air outlet gives sufficient airflow.
(b) Do a check of the air hose connections upstream of the air outlet.
(c) Do a check of the correct air hose installation.
(3) Close the applicable air outlet:
(a) Examine the fresh-air hose and the connections for leaks.

NOTE: Leaks are not permitted.

5. Close-up
Subtask 21-21-00-860-058-A

A. Put the aircraft back to its initial configuration.
(1) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002)

[Rev.10 from 2021] 2026.03.31 23:00:48 UTC