Removal of the Cargo-Compartment Smoke Detectors

TASK 26-16-15-000-001-A
Removal of the Cargo-Compartment Smoke Detectors

ZONE: 130
ZONE: 150
ZONE: 160
FIN: 1WH
FIN: 10WH ** ON A/C NOT FOR ALL
FIN: 2WH
FIN: 3WH
FIN: 4WH
FIN: 5WH
FIN: 6WH
FIN: 7WH ** ON A/C NOT FOR ALL
FIN: 8WH ** ON A/C NOT FOR ALL
FIN: 9WH ** 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
No specific	AR	WARNING NOTICE(S)
FOR [1WH] (DET-SMOKE, CARGO COMPT)
FOR [10WH] (DET-SMOKE, CARGO COMPT)
FOR [2WH] (DET-SMOKE, CARGO COMPT)
FOR [3WH] (DET-SMOKE, CARGO COMPT)
FOR [4WH] (DET-SMOKE, CARGO COMPT)
FOR [7WH] (DET-SMOKE, CARGO COMPT)
FOR [8WH] (DET-SMOKE, CARGO COMPT)
FOR [9WH] (DET-SMOKE, CARGO COMPT)
No specific	AR	CAP - BLANKING
FOR [5WH] (DET-SMOKE, CARGO COMPT)
FOR [6WH] (DET-SMOKE, CARGO COMPT)
No specific	AR	CAP - BLANKING

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
130	FWD CARGO COMPT AFT BULKHEAD OF AVNCS COMPT TO FWD PRESSURE BULKHEAD OF WING CENTER BOX
150	AFT CARGO COMPARTMENT FWD PRESS BULKHEAD TO AFT BULKHEAD OF AFT CARGO COMPARTMENT
160	BULK CARGO COMPARTMENT AFT BULKHEAD OF AFT CARGO COMPARTMENT TO AFT BULKHEAD OF BULK CARGO COMPARTMENT
251AF, 825, 826

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 52-30-00-860-001-A	Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 53-42-12-000-001-A	Removal of the Cabin Floor Panels from FR47 thru FR64
Smoke Detectors ** ON A/C NOT FOR ALL
Smoke Detectors ** ON A/C NOT FOR ALL
Smoke Detectors ** ON A/C NOT FOR ALL
Smoke Detectors ** ON A/C NOT FOR ALL
Smoke Detectors ** ON A/C NOT FOR ALL
Smoke Detectors ** ON A/C NOT FOR ALL
Smoke Detectors ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 26-16-15-861-051-A

A. Aircraft Maintenance Configuration
(1) Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).

Subtask 26-16-15-010-051-B ** ON A/C NOT FOR ALL

B. Get Access
(1) Remove the cabin floor panel 251AF to get access to the smoke detectors 5WH and 6WH (Ref. AMM TASK 53-42-12-000-001).
(2) Put a WARNING NOTICE(S) in position to tell persons to be careful about the opened floor panel.
(3) Open the forward cargo-compartment door 825 and the aft cargo-compartment door 826 (Ref. AMM TASK 52-30-00-860-001).
(4) In the forward cargo compartment, set the CARGO COMPT LIGHT switch 6LU to the ON position.
(5) In the aft cargo compartment, set the CARGO COMPT LIGHT switch 8LU to the ON position.

Subtask 26-16-15-865-050-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	AIR COND/SDCU/CHAN1	11WQ	C06
** ON A/C NOT FOR ALL
49VU	AIR COND/CIDS/SDF/DIR2 ESS	18WH	C06
49VU	AIR COND/CIDS/SDF/DIR1 ESS	15WH	C05
** ON A/C NOT FOR ALL
122VU	AIR COND/SDCU/CHAN2	12WQ	T18
** ON A/C NOT FOR ALL
122VU	AIR COND/CIDS/SDF/DIR NORM/2	14WH	T18
122VU	AIR COND/CIDS/SDF/DIR NORM/1	17WH	T17

4. Procedure
Subtask 26-16-15-020-050-A ** ON A/C NOT FOR ALL

WARNING: DO NOT OPEN OR REPAIR THE SMOKE DETECTOR. IF THE SMOKE DETECTOR IS DAMAGED, PUT ON RUBBER GLOVES BEFORE YOU TOUCH IT. THE SMOKE DETECTOR CONTAINS RADIOACTIVE MATERIAL WHICH IS DANGEROUS. THUS ONLY WORKSHOPS APPROVED BY THE MANUFACTURER OF THE SMOKE DETECTOR ARE PERMITTED TO DO WORK ON IT. WHEN YOU DISCARD IT, OBEY THE INSTRUCTIONS OF THE SMOKE DETECTOR MANUFACTURER. ALSO OBEY LOCAL REGULATIONS FOR RADIOACTIVE MATERIALS.

A. Removal of the Smoke Detector

NOTE: The removal procedure is the same for all smoke detectors.

(1) Remove the ceiling smoke channels for access to the grid (2).
(2) Release the quick release fasteners (1).
(3) Remove the grid (2).
(4) Disconnect the electrical connector (3) from the smoke detector (6).
(5) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(6) Remove the screws (4) and the washers (5).
(7) Remove the smoke detector (6).

Subtask 26-16-15-020-050-B ** ON A/C NOT FOR ALL

A. Removal of the Smoke Detector

NOTE: The removal procedure is the same for all smoke detectors.

Subtask 26-16-15-020-050-D ** ON A/C NOT FOR ALL

A. Removal of the Smoke Detector

NOTE: The removal procedure is not the same for all smoke detectors.

(1) FOR [1WH] (DET-SMOKE, CARGO COMPT), [2WH] (DET-SMOKE, CARGO COMPT), [3WH] (DET-SMOKE, CARGO COMPT), [4WH] (DET-SMOKE, CARGO COMPT), [7WH] (DET-SMOKE, CARGO COMPT), [8WH] (DET-SMOKE, CARGO COMPT), [9WH] (DET-SMOKE, CARGO COMPT), [10WH] (DET-SMOKE, CARGO COMPT)
(a) Remove the ceiling smoke channels for access to the grid (2).
(b) Release the quick release fasteners (1).
(c) Remove the grid (2).
(d) Disconnect the electrical connector (3) from the smoke detector (6).
(e) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(f) Remove the screws (4) and the washers (5).
(g) Remove the smoke detector (6).
(2) FOR [5WH] (DET-SMOKE, CARGO COMPT), [6WH] (DET-SMOKE, CARGO COMPT)
(a) Remove the screws (10) and the washers (11).
(b) Move the plate (9) to the side and carefully lift it together with the smoke detector (17) to get access to the electrical connector (18).
(c) Disconnect the electrical connector (18) from the smoke detector (17).
(d) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(e) Remove the nuts (15), the washers (8), the screws (7) and the spacers (12,13).
(f) Remove the plate (9) and the angles (14) from the smoke detector (17).

[Rev.10 from 2021] 2026.04.01 04:07:57 UTC