Reactivation of the Lavatory/Galley Extraction Fan

TASK 21-23-00-440-001-A
Reactivation of the Lavatory/Galley Extraction Fan

FIN: 1HU

1. Reason for the Job
MMEL 21-23-01A
LAVATORY AND GALLEY EXTRACTION FAN (FAA ONLY)
2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TASK 21-61-00-710-001-A	Operational Test of the Pack Temperature-Control System
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 21-23-00-861-054-A

A. Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).

4. Procedure
Subtask 21-23-00-865-053-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/LAV/GALLEY VENT CTL/EXTRACT FAN/CTL	5HU	U21
122VU	AIR COND/LAV/GALLEY VENT CTL/EXTRACT FAN/SPLY	6HU	U19

Subtask 21-23-00-710-051-A

B. Do the operational test of the pack temperature-control system (Ref. AMM TASK 21-61-00-710-001)

Subtask 21-23-00-440-050-A

C. Placard
(1) Remove the deactivation placard in the cockpit.

5. Close-up
Subtask 21-23-00-862-054-A

A. De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.02 06:10:56 UTC