Deactivation of the Lavatory/Galley Extraction Fan

TASK 21-23-00-040-001-A
Deactivation of the Lavatory/Galley Extraction Fan

FIN: 1HU
Task Summary

Access	Test	Specific Tools	Mhr	E/T	Nb Men
NO	NO	NO	0.3	0.3	1

1. Reason for the Job
MMEL 21-23-01A
LAVATORY AND GALLEY EXTRACTION FAN (FAA ONLY)
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. 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 21-23-00-861-053-A

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

4. Procedure
Subtask 21-23-00-865-052-A

A. Open, safety and tag 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 21-23-00-040-050-B

B. Deactivation of the Lavatory/Galley Extraction Fan
(1) Make sure that:

on the lower ECAM display unit COND page the cabin duct temperatures are shown.

Subtask 21-23-00-862-055-A

C. Placard
(1) Put a placard in the cockpit to tell persons that the lavatory/galley extraction fan is deactivated.
(2) Make an entry in the logbook.

Subtask 21-23-00-869-050-A

D. Cockpit Effects
(1) The message LAV DET may be erroneously displayed on the SD INOP SYS status page.

5. Close-up
Subtask 21-23-00-862-053-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