W DOC AIRBUS | TSM A320F

Engine 1 or 2 Stall at Flight Phase 1 or 2 (Start/Ground Operations)

TASK 73-00-00-810-865-A
Engine 1 or 2 Stall at Flight Phase 1 or 2 (Start/Ground Operations)

1. Possible Causes
  • VSV
  • N2 SNSR
  • T12
  • T25
  • IP check valve
  • VBV
  • HMU
  • ECU [4000KS]
  • fuel pump
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
TSM TASK 36-11-00-810-829-A
Loss of the Non-Return Function and Temperature Limitation Function of the Bleed Pressure-Regulator Valve of the Engine 1
TSM TASK 36-11-00-810-830-A
Loss of the Non-Return Function and Temperature Limitation Function of the Bleed Pressure-Regulator Valve of the Engine 2
TSM TASK 70-00-00-810-801-A
Engine Failure(s)
TSM TASK 73-20-00-810-857-A
Loss of T25 Sensor Signal through the Two Channels on Engine 1
TSM TASK 73-20-00-810-858-A
Loss of T25 Sensor Signal through the Two Channels on Engine 2
TSM TASK 80-00-00-810-833-A
Stall of the Engine 1 or 2
AMM 36-11-41-000-040
Removal of the Intermediate Pressure (IP) Bleed Check Valve
AMM 36-11-41-200-001
Check of the IP Bleed Check Valve for Condition
AMM 36-11-41-400-040
Installation of the Intermediate Pressure (IP) Bleed Check Valve
AMM 36-11-41-400-041
Installation of the Intermediate Pressure (IP) Bleed Check Valve
AMM 72-00-00-200-003
Procedure After the Engine has Exceeded the Operational Limits
AMM 72-00-00-200-008
Inspection/Check After the Engine has Exceeded the Operational Limits
AMM 72-31-00-290-002
Inspection of the High Pressure Compressor Rotor Assembly
AMM 73-11-10-000-001
Removal of the Fuel Pump and Filter Assembly
AMM 73-11-10-000-003
Removal of the Fuel Pump and Filter Assembly
AMM 73-11-10-400-001
Installation of the Fuel Pump and Filter Assembly
AMM 73-11-10-400-003
Installation of the Fuel Pump and Filter Assembly
AMM 73-21-10-000-001
Removal of the Hydromechanical Unit (HMU)
AMM 73-21-10-000-002
Removal of the Hydromechanical Unit (HMU)
AMM 73-21-10-400-001
Installation of the Hydromechanical Unit (HMU)
AMM 73-21-10-400-002
Installation of the Hydromechanical Unit (HMU)
AMM 73-21-60-000-001
Removal of the Electronic Control Unit (ECU)
AMM 73-21-60-400-001
Installation of the Electronic Control Unit (ECU)
AMM 73-21-60-740-001
Read the CLASS 3 REPORT
AMM 73-21-60-740-007
Correct Time Limited Faults (Non Asterisked) of the Engine Scheduled Maintenance Report
AMM 73-21-60-740-026
Read the CLASS 3 REPORT
AMM 73-29-00-710-040
Operational Test of the FADEC on the ground (with Engine Motoring)
AMM 75-32-10-210-001
Visual Inspection of the Variable Stator Vane Actuator
3. Fault Confirmation
Subtask 73-00-00-710-176-A ** ON A/C NOT FOR ALL
A. Not applicable (confirmation may cause additional damage to the engine).
NOTE: The ECAM warning is set if N2 speed is between 50 per cent and 58 per cent and a stall condition is detected by the ECU. The setting of this ECAM warning indicates that the engine went into subidle speed.
NOTE: This ECAM warning can be set in the air or on the ground.
NOTE: This task has to be applied only if ECAM Warning ENG1 STALL or ENG2 STALL is reported.
4. Fault Isolation
Subtask 73-00-00-810-114-A ** ON A/C NOT FOR ALL
A. If physical stall was confirmed (felt/heard by the crew):
   (1) Do the engine post stall inspection AMM 72-00-00-200-003 (Inspection after exceedance of the operational limits).
   (2) Accomplish the Troubleshooting in step 4.C.
Subtask 73-00-00-810-200-A ** ON A/C NOT FOR ALL
B. If no physical stall condition was confirmed or reported by the crew:
   (1) Ten (10) cycles are allowed before accomplishing the engine post stall inspection AMM 72-00-00-200-003 (Inspection after exceedance of the operational limits).
   (2) Accomplish the Troubleshooting in step 4.C.
Subtask 73-00-00-810-114-C ** ON A/C NOT FOR ALL
C. If physical stall was confirmed (felt/heard by the crew):
NOTE: Refer to CFM SB 72-0391 and if necessary, do a borescope inspection of the stage 5 booster blades and the abradable.
   (1) Do the engine post stall inspection AMM 72-00-00-200-008 (Inspection after exceedance of the operational limits).
   (2) Accomplish the Troubleshooting in step 4.C.
Subtask 73-00-00-810-200-C ** ON A/C NOT FOR ALL
D. If a physical stall condition was reported by ENGx STALL ECAM, or was reported by the crew during engine starting:
   (1) Ten (10) cycles are permitted before you do the engine starting post stall inspection (Ref. TSM TASK 80-00-00-810-833).
   (2) Accomplish the Troubleshooting in step 4.C.
Subtask 73-00-00-810-201-A ** ON A/C NOT FOR ALL
E. Troubleshooting
   (1) Do a check of the Post Flight Report and of the FADEC scheduled maintenance AMM 73-21-60-740-007 for fault messages including the following words: VSV , N2 SNSR , T12 , T25 , HMU.
     (a) If one of those fault messages is present:
     (b) If no message is found:
     (c) If nothing is found:
  • do a detailed visual inspection of the VSV system control linkages AMM 75-32-10-210-001 and look for any broken or loose components,
  • repair or replace damaged parts.
       1 If nothing is found:
  • do a FADEC motoring test AMM 73-29-00-710-040 and check for VBV doors operation during the test with reverser cowls opened,
  • visually check that all doors move together smoothly and freely.
         a If trouble is found:
  • repair or replace damaged parts.
NOTE: The VBV doors may be found in any position with the engine being stopped. If the VBV doors are not found in the fully closed position, this is not indicating an abnormal condition or a system failure. However, all doors must be set at the same angular position.
         b If nothing is found:
       2 If the fault continues:
  • check again the Post Flight Report (PFR), Scheduled Maintenance Report (SMR).
         a If any message is present:
         b If none of the above listed fault messages is present:
         c If nothing is found:
Subtask 73-00-00-810-201-C ** ON A/C NOT FOR ALL
E. Troubleshooting operational limits
   (1) Do a check of the Post Flight Report and of the FADEC scheduled maintenance AMM 73-21-60-740-007 and Class 3 Reports AMM 73-21-60-740-026 for fault messages including the following words: VSV , N2 SNSR , T12 , T25 , HMU.
     (a) If one of those fault messages is present:
     (b) If no message is found:
     (c) If nothing is found:
  • do a detailed visual inspection of the VSV system control linkages AMM 72-31-00-290-002 and look for any broken or loose components,
  • repair or replace damaged parts.
       1 If nothing is found:
  • do a FADEC motoring test AMM 73-29-00-710-040 and check for VBV doors operation during the test with reverser cowls opened,
  • visually check that all doors move together smoothly and freely.
         a If trouble is found:
  • repair or replace damaged parts.
NOTE: The VBV doors may be found in any position with the engine being stopped. If the VBV doors are not found in the fully closed position, this is not indicating an abnormal condition or a system failure. However, all doors must be set at the same angular position.
         b If nothing is found:
       2 If nothing is found:
       3 If the fault continues:
  • check again the Post Flight Report (PFR), Scheduled Maintenance Report (SMR) and Class 3 Report AMM 73-21-60-740-026.
         a If any message is present:
         b If nothing is found:
       4 If the fault continues:
  • check again the Post Flight Report (PFR), Scheduled Maintenance Report (SMR) and Class 3 Report AMM 73-21-60-740-026.
         a If any message is present:
         b If none of the above listed fault messages is present:
         c If nothing is found:
Subtask 73-00-00-810-201-D ** ON A/C NOT FOR ALL
E. Troubleshooting
   (1) Do a check of the Post Flight Report and of the FADEC scheduled maintenance AMM 73-21-60-740-007 and Class 3 Reports AMM 73-21-60-740-001 for fault messages including the following words: VSV , N2 SNSR , T12 , T25 , HMU.
     (a) If one of those fault messages is present:
     (b) If no message is found:
     (c) If nothing is found:
  • do a detailed visual inspection of the VSV system control linkages AMM 75-32-10-210-001 and look for any broken or loose components,
  • repair or replace damaged parts.
       1 If nothing is found:
  • do a FADEC motoring test AMM 73-29-00-710-040 and check for VBV doors operation during the test with reverser cowls opened,
  • visually check that all doors move together smoothly and freely.
         a If trouble is found:
  • repair or replace damaged parts.
NOTE: The VBV doors may be found in any position with the engine being stopped. If the VBV doors are not found in the fully closed position, this is not indicating an abnormal condition or a system failure. However, all doors must be set at the same angular position.
         b If nothing is found:
         c If nothing is found:
       2 If the fault continues:
  • check again the Post Flight Report (PFR), Scheduled Maintenance Report (SMR).
         a If any message is present:
         b If none of the above listed fault messages is present:
         c If nothing is found:
Subtask 73-00-00-710-177-A ** ON A/C NOT FOR ALL
F. Repair Confirmation
   (1) Do one of these two optional procedures:
     (a) Option 1
Operate the engine at the thrust levels and engine loads at which the stall occurred and look for operational problems. If the test is satisfactory, then interrogate the PFR and the SMR Report. If no internal VSV, VBV, T25 or N2 maintenance message shows , then you corrected the problem.
     (b) Option 2
Record the maintenance procedures that have been performed during the inspection/troubleshooting procedure and monitor the engine/airplane on subsequent flights.
[Rev.8 from Aug 2018] 2026.04.04 04:35:10 UTC
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