Removal of the Smoke Detector of Lavatory A

TASK 26-17-15-000-802-A
Removal of the Smoke Detector of Lavatory A

ZONE: 220
FIN: 1WQ ** 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	CAP - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
220	FWD CAB UTILITY AREAS

C. 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 26-17-00-00	LAVATORY SMOKE DETECTION - DESCRIPTION AND OPERATION
Smoke Detector of Lavatory A

3. Job Set-up
Subtask 26-17-15-860-063-A ** ON A/C NOT FOR ALL

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

Subtask 26-17-15-865-098-A ** ON A/C NOT FOR ALL

B. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	COM/CIDS/DEU B/ESS	153RH	G03
** ON A/C NOT FOR ALL
49VU	COM/CIDS/DEU B ESS/R	420RH	G05
49VU	COM/CIDS/DEU B ESS/L	419RH	G04
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DEU B/NORM	162RH	M08
** ON A/C NOT FOR ALL
121VU	COM/CIDS/DEU B/BAT	143RH	N12
** ON A/C NOT FOR ALL
121VU	COM / CIDS / DEU B / NORM FWD	193RH	M09
** ON A/C NOT FOR ALL
121VU	COM NAV/CIDS/DEU A NORM/L FWD	663RH	M09
121VU	COM NAV/CIDS/DEU B NORM/R	620RH	M08
121VU	COM NAV/CIDS/DEU B NORM/L	619RH	M07
** ON A/C NOT FOR ALL
2001VU	CIDS-DEU B-NORM-AFT	194RH	C08

Subtask 26-17-15-010-077-A ** ON A/C NOT FOR ALL

C. Get Access

Smoke Detector of Lavatory A ** ON A/C NOT FOR ALL

(1) For the location of this component refer to (Ref. AMM D/O 26-17-00-00).
(2) Get access to the lavatory A.
(3) Get access to the smoke detector (7):
(a) Remove the screws (13) and the air-extraction grille (12).
(b) Remove the air filter (15) and the grille (14) from the air-extraction hood (9).

4. Procedure
Subtask 26-17-15-020-063-A ** ON A/C NOT FOR ALL

A. Removal of the Smoke Detector

Smoke Detector of Lavatory A ** ON A/C NOT FOR ALL

(1) Remove the screws (11) and carefully lower the air-extraction hood (9) together with the smoke detector (7).
(2) Loosen the clamp (2) and disconnect the hose (1) from the air-extraction hood (9).
(3) Disconnect the electrical connector (6) from the smoke detector (7).
(4) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(5) Remove the nuts (4), the washers (5) and the screws (10).
(6) Carefully remove the smoke detector (7) with the seal (8) from the air-extraction hood (9).

[Rev.10 from 2021] 2026.03.31 23:44:15 UTC