DOC AIRBUS | TSM A320FTroubleshoot the Engine after a Slow Acceleration to Idle event
TASK 71-00-00-810-879-A
Troubleshoot the Engine after a Slow Acceleration to Idle event
1. Possible Causes
2. Job Set-up Information
A. Referenced Information
3. Fault Confirmation
Subtask 71-00-00-710-139-A ** ON A/C NOT FOR ALL
Subtask 71-00-00-860-093-A ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:35:07 UTC
Troubleshoot the Engine after a Slow Acceleration to Idle event
1. Possible Causes
2. Job Set-up Information
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| TSM TASK 71-00-00-810-854-A | Troubleshoot the Engine after a Surge - Forward Thrust event |
| TSM TASK 73-11-00-810-808-A | Integrated Fuel Pump and Control/FMV-Track Check Channel A |
| TSM TASK 73-11-00-810-813-A | Integrated Fuel Pump and Control/FMV-Track Check Channel B |
| AMM 36-11-00-740-803 | Bite Test of the BMC |
| AMM 72-00-00-210-813 | General Visual Inspection (GVI) of the Engine Inlet Area |
| AMM 72-35-00-290-801 | Borescope Inspection of the High Pressure Compressor (HPC) Assembly |
| AMM 72-41-00-290-802 | Borescope Inspection of the Combustion Chamber and HPT Nozzle Guide Vanes |
| AMM 72-51-00-290-802 | Borescope Inspection of the High Pressure Turbine (HPT) |
| AMM 73-21-00-200-806 | Electronic Engine Control (EEC) Sensing System Check |
| AMM 73-21-00-710-806 | Test No.7 - EEC Operation Test (Self Test) |
| AMM 73-21-00-710-807 | Test No.6 - EEC Operation Test (Idle Test) |
| AMM 80-11-00-210-801 | General Visual Inspection (GVI) of the Engine Starting System |
Subtask 71-00-00-710-139-A ** ON A/C NOT FOR ALL
A. Investigate the Engine after a Slow Acceleration to Idle event
(1) Using the Multipurpose Control and Display Unit (MCDU) test the FADEC system for any recorded faults AMM 73-21-00-710-806.
(2) Any EEC monitored faults are transmitted to the aircraft Centralized Fault Display Interface Unit (CFDIU). The MCDU allows interactive dialog with the EEC. Use the MCDU to review the previous flight leg fault information, scheduled maintenance fault information and ground fault information. If there are any faults reported troubleshoot them first.
4. Fault Isolation(1) Using the Multipurpose Control and Display Unit (MCDU) test the FADEC system for any recorded faults AMM 73-21-00-710-806.
(2) Any EEC monitored faults are transmitted to the aircraft Centralized Fault Display Interface Unit (CFDIU). The MCDU allows interactive dialog with the EEC. Use the MCDU to review the previous flight leg fault information, scheduled maintenance fault information and ground fault information. If there are any faults reported troubleshoot them first.
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 WARNING, INJURY CAN OCCUR.
Subtask 71-00-00-810-146-A ** ON A/C NOT FOR ALL A. Do the steps that follow:
(1) If the crew alert warning messages related to the engine stall appear, refer to troubleshoot the engine after a surge - forward thrust event (Ref. TSM TASK 71-00-00-810-854).
(2) If the maintenance messages related to the Fuel Metering Valve (FMV) track check on channel A appear with the ECAM warning for engine FADEC status maintenance and/or the ECAM warning for engine fuel control fault and engine fuel valve fault, refer to integrated fuel pump and control/FMV-track check channel A (Ref. TSM TASK 73-11-00-810-808).
(3) If the maintenance messages related to the Fuel Metering Valve (FMV) track check on channel B appear with the ECAM warning for engine FADEC status maintenance and/or the ECAM warning for engine fuel control fault and engine fuel valve fault, refer to integrated fuel pump and control/FMV-track check channel B (Ref. TSM TASK 73-11-00-810-813).
(4) If the maintenance messages related to the High Pressure Compressor (HPC) Stator Vane Actuator (SVA) primary failure appear with the ECAM warning for engine compressor vane thrust limited, refer to HPC SVA master actuator / mechanical failure resulting in inability to position actuator (Ref. TSM TASK 75-31-00-810-819).
(5) If there are no EEC monitored faults or messages recorded, check the burner pressure and P2 sensing lines AMM 73-21-00-200-806.
(6) If you do not find any problems, the engine gaspath is suspect. Inspect the engine inlet area AMM 72-00-00-210-813.
(7) If you find evidence of Foreign Object Damage (FOD), borescope inspect the High Pressure Compressor (HPC) AMM 72-35-00-290-801.
(8) If you do not find any problems, borescope inspect the combustion chamber area AMM 72-41-00-290-802.
(9) If you do not find any problems, borescope inspect the High Pressure Turbine (HPT) AMM 72-51-00-290-802.
(10) If no problems are found, inspect the starter air supply ducts AMM 80-11-00-210-801.
(11) If the fault continues, it may indicate an aircraft system interface problem such as the Environmental Control System (ECS). Check the aircraft ECS for any recorded faults AMM 36-11-00-740-803.
(12) If you do not find any problems run the engine at idle AMM 73-21-00-710-807.
5. Close-up(1) If the crew alert warning messages related to the engine stall appear, refer to troubleshoot the engine after a surge - forward thrust event (Ref. TSM TASK 71-00-00-810-854).
(2) If the maintenance messages related to the Fuel Metering Valve (FMV) track check on channel A appear with the ECAM warning for engine FADEC status maintenance and/or the ECAM warning for engine fuel control fault and engine fuel valve fault, refer to integrated fuel pump and control/FMV-track check channel A (Ref. TSM TASK 73-11-00-810-808).
(3) If the maintenance messages related to the Fuel Metering Valve (FMV) track check on channel B appear with the ECAM warning for engine FADEC status maintenance and/or the ECAM warning for engine fuel control fault and engine fuel valve fault, refer to integrated fuel pump and control/FMV-track check channel B (Ref. TSM TASK 73-11-00-810-813).
(4) If the maintenance messages related to the High Pressure Compressor (HPC) Stator Vane Actuator (SVA) primary failure appear with the ECAM warning for engine compressor vane thrust limited, refer to HPC SVA master actuator / mechanical failure resulting in inability to position actuator (Ref. TSM TASK 75-31-00-810-819).
(5) If there are no EEC monitored faults or messages recorded, check the burner pressure and P2 sensing lines AMM 73-21-00-200-806.
(6) If you do not find any problems, the engine gaspath is suspect. Inspect the engine inlet area AMM 72-00-00-210-813.
(7) If you find evidence of Foreign Object Damage (FOD), borescope inspect the High Pressure Compressor (HPC) AMM 72-35-00-290-801.
(8) If you do not find any problems, borescope inspect the combustion chamber area AMM 72-41-00-290-802.
(9) If you do not find any problems, borescope inspect the High Pressure Turbine (HPT) AMM 72-51-00-290-802.
(10) If no problems are found, inspect the starter air supply ducts AMM 80-11-00-210-801.
(11) If the fault continues, it may indicate an aircraft system interface problem such as the Environmental Control System (ECS). Check the aircraft ECS for any recorded faults AMM 36-11-00-740-803.
(12) If you do not find any problems run the engine at idle AMM 73-21-00-710-807.
Subtask 71-00-00-860-093-A ** ON A/C NOT FOR ALL
A. Put the aircraft back to its initial configuration.
(1) Make sure that the work area is clean and clear of tools and other items.
(1) Make sure that the work area is clean and clear of tools and other items.