DOC AIRBUS | AMM A320FVisual Inspection of the Engine after Fire [PW11]
TASK 72-00-00-210-817-A
Visual Inspection of the Engine after Fire
Use this inspection procedure to examine the engine after a fire or a fire warning message.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 72-00-00-941-182-A ** ON A/C NOT FOR ALL
Subtask 72-00-00-210-164-A ** ON A/C NOT FOR ALL
Subtask 72-00-00-410-227-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 02:47:28 UTC
Visual Inspection of the Engine after Fire
WARNING:
BE CAREFUL WHEN YOU DO WORK ON THE ENGINE AFTER SHUTDOWN. THE ENGINE CAN STAY HOT FOR A LONG TIME. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY CAN OCCUR.
CAUTION:
REFER TO SPOP 425 FOR ENGINES THAT GOT FIRE EXTINGUISHING AGENTS, HYDRAULIC FLUID, OIL OR FUEL ON THE GASPATH.
CAUTION:
DO NOT USE THIS WATER WASH PROCEDURE (WITH OR WITHOUT DETERGENTS) FOR ENGINES WITH DRY CHEMICAL POWDER FIRE EXTINGUISHING AGENTS IN THE GASPATH. THESE AGENTS ARE NOT WATER SOLUBLE. IF YOU DO WATER WASH THE ENGINE WITH THESE AGENTS IN THE GASPATH, THE AGENTS WILL STICK OR CAKE ON THE SURFACES OF THE GASPATH PARTS.
ZONE: 400
1. Reason for the JobUse this inspection procedure to examine the engine after a fire or a fire warning message.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | ACCESS PLATFORM 1M(3 FT) |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 400 | POWER PLANT, NACELLES AND PYLONS |
| FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1) | |
| 437AL, 438AR, 451AL, 452AR | |
| FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2) | |
| 447AL, 448AR, 461AL, 462AR | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 70-27-00-910-806-A | SPOP 425 - Requirements after Contact with Fire Extinguishing Agents, Hydraulic Fluid, Fuel or Oil |
| TASK 71-00-00-700-806-A | Power-Plant System Maintenance (Post Maintenance Test Index) |
| TASK 71-00-00-860-832-A | Procedure to Prevent Engine Motoring and to Stop the Electrical Supply to the EEC |
| TASK 71-13-00-010-802-A | Opening of the Fan Cowl Doors |
| TASK 71-13-00-410-802-A | Closing of the Fan Cowl Doors |
| TASK 72-00-00-200-811-A | Inspection for Fire Extinguishing Agent |
| TASK 72-00-00-210-809-A | Visual Examination (after an Exhaust Gas Temperature (EGT) Overtemperature) |
| TASK 72-00-00-290-811-A | Borescope Inspection of the Engine |
| TASK 78-30-00-040-805-A | Deactivation of the Thrust Reverser System for Ground Maintenance |
| TASK 78-30-00-440-805-A | Reactivation of the Thrust Reverser System after Ground Maintenance |
| TASK 78-36-00-010-802-A | Opening of the Thrust Reverser Cowl-Doors |
| TASK 78-36-00-410-802-A | Closing of the Thrust Reverser Cowl-Doors |
Subtask 72-00-00-941-182-A ** ON A/C NOT FOR ALL
A. Safety Precautions
(1) Do the procedure to prevent engine motoring and to stop the electrical supply to the Electronic Engine Control (EEC)
(Ref. AMM TASK 71-00-00-860-832)
Subtask 72-00-00-010-265-A ** ON A/C NOT FOR ALL (1) Do the procedure to prevent engine motoring and to stop the electrical supply to the Electronic Engine Control (EEC)
(Ref. AMM TASK 71-00-00-860-832)
B. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR.
(2) Put an ACCESS PLATFORM 1M(3 FT) in position.
Subtask 72-00-00-040-132-A ** ON A/C NOT FOR ALL (1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
437AL, 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
447AL, 448AR.
(2) Put an ACCESS PLATFORM 1M(3 FT) in position.
C. Deactivation of the Thrust Reverser for Maintenance
Subtask 72-00-00-010-266-A ** ON A/C NOT FOR ALL WARNING:
YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.
(1) Do the deactivation of the thrust reverser system for maintenance (Ref. AMM TASK 78-30-00-040-805). D. Get Access
(1) Open the thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL, 452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL, 462AR.
4. Procedure(1) Open the thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-010-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL, 452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL, 462AR.
Subtask 72-00-00-210-164-A ** ON A/C NOT FOR ALL
A. Visual Inspection of the Engine after a Fire
(1) Do an inspection of the engine after a fire or a fire warning message as follows:
(a) Do a check of the flight records for fire warning messages if the fire or warning occurred during the flight.
(b) Do a check of the records for fire detection and overheat system messages.
(c) Do a check to know which fire detector sent a fire warning message.
(d) Do a check of the records for a high nacelle temperature message. Do the troubleshooting procedure on the nacelle temperature probe as necessary. Make sure that there is no fault message related to ATA chapters 26, 30 and/or 36.
1 If there is a fault message, do the related troubleshooting procedure.
2 If there is no fault message, continue the visual inspection procedure.
(e) Do a check of the records to know when the aircraft fire extinguishing system was applied.
(f) Do a check of the records for the in−flight shutdown or flameout. Do a check to know if the engine was started again during the flight.
(2) If the fire extinguishing system was applied, by step 4.A.(1) (e), refer to (Ref. AMM TASK 72-00-00-200-811).
(3) Do an inspection to find if there is internal fire damage to the engine as follows:
(a) Turn the rotor manually to make sure that the rotor turns freely.
1 The rotor must turn freely. A rotor that does not turn freely is an indication of damage.
2 While the rotor turns, listen for parts that rub against each other or hit other parts that usually do not touch. Such noises are indications of damage.
(b) If the free movement check gives one or more indications of damage, do a borescope inspection of the engine to find what parts have fire damage.
(4) If the borescope inspection finds indications of fire damage, engine replacement can be necessary. Contact your Pratt and Whitney representative for help.
(5) If there are no indications of damaged, burnt or melted engine parts or components, continue the inspection for the cause of the fire warning message:
(a) Do a check for an engine hot air leak in the nacelle without fire. You must repair all the air leaks before the engine can continue in service. Do the troubleshooting procedure on the nacelle temperature probe as necessary. Make sure that there is no fault message related to ATA chapters 26, 30 and/or 36.
1 If there is fault message, do the related troubleshooting procedure.
2 If there is no fault message, continue the visual inspection procedure.
(b) If damage is seen in a local area, do the steps that follow:
1 Do a check for a fire caused by a fluid leak in the nacelle. You must repair all air leaks before the engine can continue in service. Do the troubleshooting procedure on the nacelle temperature probe as necessary. Make sure that there is no fault message related to ATA chapters 26, 30 and/or 36.
a If there is a fault message, do the related troubleshooting procedure.
b If there is no fault message, continue the visual inspection procedure.
2 If no fluid leak was identified, do a check of the engine for hot air leaks in the nacelle by step 4.A.(5) (a).
3 Remove and replace the damaged parts refer to the applicable maintenance tasks.
4 Do a check for fault, refer to the test from the post maintenance test requirements index (Ref. AMM TASK 71-00-00-700-806) to do a check for faults.
5 If the faults continue to occur, do step 4.A.(5) (c).
(c) If you cannot repair the damage on−wing, the engine replacement can be necessary. Contact your Pratt and Whitney representative for help and do the steps that follow:
1 Remove the engine from service.
2 Send the engine to the shop with the engine records.
(6) If the fire or warning occurred during ground operation, do the steps that follow:
(a) Do a check to see if there was a tailpipe fire during engine start.
1 Do a visual inspection of the engine after EGT overtemperature operation (Ref. AMM TASK 72-00-00-210-809).
2 Do a borescope inspection of the engine (Ref. AMM TASK 72-00-00-290-811).
(c) Do a check of the event report to know if the ground fire-extinguishing agents were applied to the engine gaspath.
1 Use a light to look in the engine inlet and exhaust and see if the ground fire-extinguishing agents were applied to the engine gaspath.
2 Examine the low pressure compressor inlet vanes, 3rd stage low pressure turbine blades and outer air seals for signs of fire-extinguishing agents.
(d) Do a check to see if ground fire extinguishing agents were applied to the external surface of the engine (Ref. AMM TASK 72-00-00-200-811).
(e) Refer to SPOP 425 − Requirements after Contact with Fire Extinguishing Agents, Hydraulic Agents, Fluid, Fuel or Oil (Ref. AMM TASK 70-27-00-910-806) to see if it is necessary to clean the engine components or if continued service is permitted.
5. Close-up(1) Do an inspection of the engine after a fire or a fire warning message as follows:
(a) Do a check of the flight records for fire warning messages if the fire or warning occurred during the flight.
(b) Do a check of the records for fire detection and overheat system messages.
(c) Do a check to know which fire detector sent a fire warning message.
(d) Do a check of the records for a high nacelle temperature message. Do the troubleshooting procedure on the nacelle temperature probe as necessary. Make sure that there is no fault message related to ATA chapters 26, 30 and/or 36.
1 If there is a fault message, do the related troubleshooting procedure.
2 If there is no fault message, continue the visual inspection procedure.
(e) Do a check of the records to know when the aircraft fire extinguishing system was applied.
(f) Do a check of the records for the in−flight shutdown or flameout. Do a check to know if the engine was started again during the flight.
(2) If the fire extinguishing system was applied, by step 4.A.(1) (e), refer to (Ref. AMM TASK 72-00-00-200-811).
(3) Do an inspection to find if there is internal fire damage to the engine as follows:
(a) Turn the rotor manually to make sure that the rotor turns freely.
1 The rotor must turn freely. A rotor that does not turn freely is an indication of damage.
2 While the rotor turns, listen for parts that rub against each other or hit other parts that usually do not touch. Such noises are indications of damage.
(b) If the free movement check gives one or more indications of damage, do a borescope inspection of the engine to find what parts have fire damage.
(4) If the borescope inspection finds indications of fire damage, engine replacement can be necessary. Contact your Pratt and Whitney representative for help.
(5) If there are no indications of damaged, burnt or melted engine parts or components, continue the inspection for the cause of the fire warning message:
(a) Do a check for an engine hot air leak in the nacelle without fire. You must repair all the air leaks before the engine can continue in service. Do the troubleshooting procedure on the nacelle temperature probe as necessary. Make sure that there is no fault message related to ATA chapters 26, 30 and/or 36.
1 If there is fault message, do the related troubleshooting procedure.
2 If there is no fault message, continue the visual inspection procedure.
(b) If damage is seen in a local area, do the steps that follow:
1 Do a check for a fire caused by a fluid leak in the nacelle. You must repair all air leaks before the engine can continue in service. Do the troubleshooting procedure on the nacelle temperature probe as necessary. Make sure that there is no fault message related to ATA chapters 26, 30 and/or 36.
a If there is a fault message, do the related troubleshooting procedure.
b If there is no fault message, continue the visual inspection procedure.
2 If no fluid leak was identified, do a check of the engine for hot air leaks in the nacelle by step 4.A.(5) (a).
3 Remove and replace the damaged parts refer to the applicable maintenance tasks.
4 Do a check for fault, refer to the test from the post maintenance test requirements index (Ref. AMM TASK 71-00-00-700-806) to do a check for faults.
5 If the faults continue to occur, do step 4.A.(5) (c).
(c) If you cannot repair the damage on−wing, the engine replacement can be necessary. Contact your Pratt and Whitney representative for help and do the steps that follow:
1 Remove the engine from service.
2 Send the engine to the shop with the engine records.
(6) If the fire or warning occurred during ground operation, do the steps that follow:
(a) Do a check to see if there was a tailpipe fire during engine start.
NOTE: This is usually not an unsatisfactory condition unless the Exhaust Gas Temperature (EGT) was more than the EGT limit.
(b) Get the record of the maximum EGT and time at this temperature. If the engine operated more than the maximum EGT limit, do the applicable EGT overtemperature inspections as follows:1 Do a visual inspection of the engine after EGT overtemperature operation (Ref. AMM TASK 72-00-00-210-809).
2 Do a borescope inspection of the engine (Ref. AMM TASK 72-00-00-290-811).
(c) Do a check of the event report to know if the ground fire-extinguishing agents were applied to the engine gaspath.
1 Use a light to look in the engine inlet and exhaust and see if the ground fire-extinguishing agents were applied to the engine gaspath.
2 Examine the low pressure compressor inlet vanes, 3rd stage low pressure turbine blades and outer air seals for signs of fire-extinguishing agents.
(d) Do a check to see if ground fire extinguishing agents were applied to the external surface of the engine (Ref. AMM TASK 72-00-00-200-811).
(e) Refer to SPOP 425 − Requirements after Contact with Fire Extinguishing Agents, Hydraulic Agents, Fluid, Fuel or Oil (Ref. AMM TASK 70-27-00-910-806) to see if it is necessary to clean the engine components or if continued service is permitted.
Subtask 72-00-00-410-227-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 cowl-doors (Ref. AMM TASK 78-36-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL, 452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL, 462AR.
Subtask 72-00-00-440-126-A ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the thrust reverser cowl-doors (Ref. AMM TASK 78-36-00-410-802):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENG 1)
451AL, 452AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENG 2)
461AL, 462AR.
B. Do the reactivation of the thrust reverser system after maintenance (Ref. AMM TASK 78-30-00-440-805).
Subtask 72-00-00-410-228-A ** ON A/C NOT FOR ALL