Procedure after Halon Products Contamination [CFMB]

TASK 72-00-00-200-042-A
Procedure after Halon Products Contamination

FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** 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	WARNING NOTICE(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.CP2442)	engine oil

C. 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

D. Referenced Information

REFERENCE	DESIGNATION
TASK 12-13-79-610-002-A	Check oil level and replenish Check Pop Out Indicator of EMCD (Electrical Master Chip Detector)
TASK 12-13-79-610-002-A-01	Check oil level and replenish (Pressure Filling)
TASK 12-13-79-610-003-C	Oil Tank Draining
TASK 12-13-79-610-004-C	Draining of the Accessory Drive Section
TASK 71-00-00-710-003-B	Engine Automatic Start
TASK 71-00-00-710-028-B	Engine Shutdown
TASK 71-13-00-010-040-B	Opening of the Fan Cowl Doors
TASK 71-13-00-410-040-B	Closing of the Fan Cowl Doors
TASK 78-30-00-081-041-B	Make the Thrust Reverser Serviceable after Maintenance
TASK 78-30-00-481-041-B	Make the Thrust Reverser Unserviceable for Maintenance
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

3. Job Set-up
Subtask 72-00-00-941-132-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).

Subtask 72-00-00-010-172-A ** ON A/C NOT FOR ALL

B. Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-040):
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR

Subtask 72-00-00-040-090-A ** ON A/C NOT FOR ALL

C. Make the thrust reverser unserviceable (Ref. AMM TASK 78-30-00-481-041).

Subtask 72-00-00-010-173-A ** ON A/C NOT FOR ALL

D. Open the thrust reverser doors (Ref. AMM TASK 78-36-00-010-040):
(1) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(2) FOR [1000EM2] (ENGINE-2)
461AL 462AR

4. Procedure
Subtask 72-00-00-280-076-A ** ON A/C NOT FOR ALL

A. Halon Products Contamination

CAUTION: THE ENGINE CONTAINS NUMEROUS TITANIUM PARTS, THEREFORE HALON SUBSTANCES MUST NOT BE USED.

(1) In flight:
Use of nacelle extinguishing equipment (fire confirmed or not). No maintenance action.
(2) On ground:
(a) Use of nacelle extinguishing equipment only:
open nacelle doors immediately to disperse halon vapors. No further maintenance action is required.
(b) If halon fluids have been sprayed in the engine (in undetermined quantity), do the following steps.
1 If the engine can be restarted within 30 minutes.

Perform a ground run at Idle for 10 minutes (Ref. AMM TASK 71-00-00-710-003).
Drain oil tank (Ref. AMM TASK 12-13-79-610-003).
Drain accessory gearbox (AGB) (Ref. AMM TASK 12-13-79-610-004).
Reservice oil tank with new engine oil (Material No.CP2442) (Ref. AMM TASK 12-13-79-610-002).

2 If reignition and ground run cannot be performed before 30 minutes, perform as soon as possible, and within one hour, the following:

Start and motor the engine for 5 minutes (Ref. AMM TASK 71-00-00-710-003).
Stop motoring for 5 to 10 minutes (Ref. AMM TASK 71-00-00-710-028).
Re-start and motor engine for 5 minutes (Ref. AMM TASK 71-00-00-710-003).
Drain oil tank (Ref. AMM TASK 12-13-79-610-003).
Drain accessory gearbox (AGB) (Ref. AMM TASK 12-13-79-610-004).
Reservice oil tank with new engine oil (Material No.CP2442) (Ref. AMM TASK 12-13-79-610-002).
Perform a ground run at idle for 10 minutes within 3 hours (Ref. AMM TASK 71-00-00-710-003).

3 If motoring the engine is impossible within 3 hours, remove and return engine to shop for disassembly, cleaning and inspection.

5. Close-up
Subtask 72-00-00-410-175-A ** ON A/C NOT FOR ALL

A. 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 72-00-00-440-090-A ** ON A/C NOT FOR ALL

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

Subtask 72-00-00-410-176-A ** ON A/C NOT FOR ALL

C. 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 WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 02:40:41 UTC