Installation of the Third (Fourth) Occupant Individual Air-Outlet

TASK 21-21-44-400-002-A
Installation of the Third (Fourth) Occupant Individual Air-Outlet

ZONE: 211
FIN: 4502HM
FIN: 4503HM

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
211	COCKPIT

B. 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
Third (Fourth) Occupant Individual Air-Outlet

3. Job Set-up
Subtask 21-21-44-860-051-A

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

Subtask 21-21-44-865-054-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
122VU	AIR COND/RECIRC FAN/L/CTL	2HG	X20
122VU	AIR COND/RECIRC FAN/L/SPLY	1HG	X18

4. Procedure
Subtask 21-21-44-420-052-B

A. Installation of the Third Occupant Individual Air-Outlet
(1) Put the air outlet (2) in position on the duct (1).
(2) Put the duct (1) with the air outlet (2) in position on the plate (4).
(3) Install the 4 screws (8) and tighten.
(4) Put the plate (4) in position on the frame (3). Tighten the 4 quarter-turn fasteners (5).
(5) Put the lining panel (6) in position. Install the 4 screws (7) and tighten.

5. Close-up
Subtask 21-21-44-865-055-A

A. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
122VU	AIR COND/RECIRC FAN/L/CTL	2HG	X20
122VU	AIR COND/RECIRC FAN/L/SPLY	1HG	X18

Subtask 21-21-44-862-051-A

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

[Rev.10 from 2021] 2026.04.02 06:10:55 UTC