Installation of the Support with the Pylon Fire Detectors

TASK 26-12-16-400-002-A
Installation of the Support with the Pylon Fire Detectors

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.

FIN: 3WD1 ** ON A/C NOT FOR ALL
FIN: 3WD2 ** ON A/C NOT FOR ALL
FIN: 4WD1 ** ON A/C NOT FOR ALL
FIN: 4WD2 ** 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	ACCESS PLATFORM 1M(3 FT)
No specific	AR	CAP - BLANKING
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR, 451AL, 452AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR, 461AL, 462AR

C. 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
TASK 26-12-00-710-001-A	Operational Check of Loop/Squib
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure
TASK 36-11-49-400-007-A	Installation of the Duct Assy
TASK 36-11-49-400-010-B	Installation of the Upper Bleed-Air Duct
TASK 36-11-49-400-040-A	Installation of the Pylon Interface Duct
TASK 36-11-49-400-042-A	Installation of the Pylon Interface Duct
TASK 36-11-49-400-049-A	Installation of the Duct Assy
TASK 36-11-53-400-001-A	Installation of the Overpressure Valve
TASK 36-11-54-400-001-A	Installation of the Fan Air Valve
TASK 71-13-00-010-010-A	Opening of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 71-13-00-010-040-B	Opening of the Fan Cowl Doors
TASK 71-13-00-010-040-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-010-A	Closing of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 71-13-00-410-040-B	Closing of the Fan Cowl Doors
TASK 71-13-00-410-040-A	Closing of the Fan Cowl Doors
TASK 78-30-00-040-012-A	Deactivation of the Thrust Reverser Hydraulic Control Unit (HCU) for Ground Maintenance
TASK 78-30-00-081-041-B	Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-081-041-A	Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-440-012-A	Re-activation of the Thrust Reverser Hydraulic Control Unit (HCU) after Ground Maintenance
TASK 78-30-00-481-041-B	Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-30-00-481-041-A	Make the Thrust Reverser Unserviceable for Maintenance
TASK 78-32-00-010-010-A	Opening of the Thrust Reverser Halves
TASK 78-32-00-410-010-A	Closing of the Thrust Reverser Halves
TASK 78-36-00-010-040-A	Opening of the Thrust Reverser Doors
TASK 78-36-00-010-040-B	Opening of the Thrust Reverser Doors
TASK 78-36-00-410-040-B	Closing of the Thrust Reverser Doors
TASK 78-36-00-410-040-A	Closing of the Thrust Reverser Doors
Pylon Fire Detectors - Support ** ON A/C NOT FOR ALL
Pylon Fire Detectors - Support ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 26-12-16-861-051-A ** ON A/C NOT FOR ALL

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

Subtask 26-12-16-860-053-A ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration
(1) On the center pedestal, on the ENG panel 115VU:
(a) Make sure that the ENG/MODE/CRANK/NORM/IGN/START selector switch is in the NORM position.
(b) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) On the overhead maintenance panel 50VU, make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off. Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize the FADEC 1(2).
(3) Make sure that the ACCESS PLATFORM 1M(3 FT) is in position.

Subtask 26-12-16-010-056-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Make sure that the fan cowl doors are open: (Ref. AMM TASK 71-13-00-010-040)
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Make sure that the thrust reverser doors are open: (Ref. AMM TASK 78-36-00-010-040)
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR

Subtask 26-12-16-010-056-B ** ON A/C NOT FOR ALL

C. Get Access
(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-010):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
(2) Make sure that the thrust reverser halves are open (Ref. AMM TASK 78-32-00-010-010):
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR.

Subtask 26-12-16-010-056-C ** ON A/C NOT FOR ALL

Subtask 26-12-16-865-054-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
FOR FIN: 1000EM1 (ENGINE1)
49VU	ENGINE/1/FIRE DET/LOOP A	7WD1	A06
121VU	ENGINE/ENG1/FIRE DET/LOOP B	8WD1	Q38
FOR FIN: 1000EM2 (ENGINE2)
49VU	ENGINE/2/FIRE DET/LOOP B	8WD2	A07
121VU	ENGINE/ENG2/FIRE DET/LOOP A	7WD2	Q39

Subtask 26-12-16-040-053-A ** ON A/C NOT FOR ALL

E. Make sure that the thrust reverser is unserviceable (Ref. AMM TASK 78-30-00-481-041).

Subtask 26-12-16-040-053-B ** ON A/C NOT FOR ALL

E. Make sure that the thrust reverser Hydraulic Control Unit (HCU) is deactivated: (Ref. AMM TASK 78-30-00-040-012)

Subtask 26-12-16-040-053-C ** ON A/C NOT FOR ALL

E. Make sure that the thrust reverser is unserviceable (Ref. AMM TASK 78-30-00-481-041).

4. Procedure
Subtask 26-12-16-420-052-A ** ON A/C NOT FOR ALL

A. Installation of the Support Assembly
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Make sure that the parts retained from the removed component are clean and in the correct condition.
(4) Put the support assembly (1) and the tubular support (4) in position.
(5) Install the bolts (2) and nuts (3) on the support assembly (1). Do not tighten the nuts (3) at this time.
(6) Put the tubular support (7) in position.
(7) Install the washer (8) and bolt (9).
(8) Tighten the bolt (9).
(9) Tighten the nuts (3).

CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.

(10) Remove the CAP - BLANKING from the electrical connectors.
(11) Make sure that all the electrical connections are clean and in the correct condition.
(12) Connect the electrical connectors to the fire detectors (5) and (6).

Subtask 26-12-16-420-052-B ** ON A/C NOT FOR ALL

A. Installation of the Support Assembly
(1) Put the support assembly (7) in position.
(2) Install the bolts (5) and nuts (4) on the support but do not tighten at this time.
(3) Install the clamps (3), washers (6), bolts (2), and the nuts (1) on the support but do not tighten at this time.
(4) Tighten the bolts (2) and (5).
(5) Remove the blanking caps from the electrical connectors.
(6) Connect the electrical connectors to the fire detectors.

Subtask 26-12-16-865-055-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	ENGINE/2/FIRE DET/LOOP B	8WD2	A07
49VU	ENGINE/1/FIRE DET/LOOP A	7WD1	A06
121VU	ENGINE/ENG2/FIRE DET/LOOP A	7WD2	Q39
121VU	ENGINE/ENG1/FIRE DET/LOOP B	8WD1	Q38

Subtask 26-12-16-860-054-A ** ON A/C NOT FOR ALL

C. Do the EIS start procedure (Upper ECAM DU only) (Ref. AMM TASK 31-60-00-860-001).

Subtask 26-12-16-710-051-A ** ON A/C NOT FOR ALL

D. Do this test.
(1) On the upper ECAM DU, make sure that the FIRE ENG1(2) LOOP A (B) FAULT message is out of view.
(2) Do an operational test of the engine fire detection system (Ref. AMM TASK 26-12-00-710-001).

Subtask 26-12-16-860-055-A ** ON A/C NOT FOR ALL

E. Do the EIS stop procedure: (Ref. AMM TASK 31-60-00-860-002).

5. Close-up
Subtask 26-12-16-420-057-A ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.
(1) Install the duct assy (Ref. AMM TASK 36-11-49-400-049).
(2) Install the pylon interface duct (Ref. AMM TASK 36-11-49-400-042).
(3) Install the Fan Air Valve (FAV) (Ref. AMM TASK 36-11-54-400-001).

Subtask 26-12-16-410-052-C ** ON A/C NOT FOR ALL

B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the thrust reverser doors: (Ref. AMM TASK 78-36-00-410-040)
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR

Subtask 26-12-16-440-051-C ** ON A/C NOT FOR ALL

C. Make the thrust reverser serviceable (Ref. AMM TASK 78-30-00-081-041).

Subtask 26-12-16-410-053-B ** ON A/C NOT FOR ALL

D. Close Access
(1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).

Subtask 26-12-16-420-057-B ** ON A/C NOT FOR ALL

E. Put the aircraft back to its initial configuration.
(1) Install the duct assy (Ref. AMM TASK 36-11-49-400-007).
(2) Install the pylon interface duct (Ref. AMM TASK 36-11-49-400-040).
(3) Install the Fan Air Valve (FAV) (Ref. AMM TASK 36-11-54-400-001).

Subtask 26-12-16-410-052-A ** ON A/C NOT FOR ALL

F. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the thrust reverser doors: (Ref. AMM TASK 78-36-00-410-040)
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR

Subtask 26-12-16-440-051-A ** ON A/C NOT FOR ALL

G. Make the thrust reverser serviceable (Ref. AMM TASK 78-30-00-081-041).

Subtask 26-12-16-410-053-A ** ON A/C NOT FOR ALL

H. Close Access
(1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).

Subtask 26-12-16-420-057-C ** ON A/C NOT FOR ALL

I. Put the aircraft back to its initial configuration.
(1) If removed, install the following equipment:
(a) Install the duct and the duct assy (Ref. AMM TASK 36-11-53-400-001).
(b) Install the upper bleed air duct (Ref. AMM TASK 36-11-49-400-010).
(c) Install the Fan Air Valve (FAV) (Ref. AMM TASK 36-11-54-400-001).

Subtask 26-12-16-410-052-B ** ON A/C NOT FOR ALL

J. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the thrust reverser halves (Ref. AMM TASK 78-32-00-410-010):
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR.

Subtask 26-12-16-440-051-B ** ON A/C NOT FOR ALL

K. Activate the thrust reverser HCU (Ref. AMM TASK 78-30-00-440-012).

Subtask 26-12-16-410-053-D ** ON A/C NOT FOR ALL

L. Close Access
(1) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-010):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Remove the access platform(s).
(3) Remove the WARNING NOTICE(S).

Subtask 26-12-16-862-050-A ** ON A/C NOT FOR ALL

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

[Rev.10 from 2021] 2026.03.31 23:42:47 UTC