DOC AIRBUS | TSM A320FSlow Start Before Light off Sequence, on Engine 1 or 2
TASK 80-00-00-810-834-A
Slow Start Before Light off Sequence, on Engine 1 or 2
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 80-00-00-710-119-A ** ON A/C NOT FOR ALL
Subtask 80-00-00-810-095-A ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:38:38 UTC
Slow Start Before Light off Sequence, on Engine 1 or 2
1. Possible Causes
- engine
- pneumatic starter
- starter shut off valve
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 36-12-51-200-001 | Remove and Check Auxiliary Power Unit Bleed Check-Valve for Condition |
| AMM 71-00-00-000-040 | Removal of the Power Plant |
| AMM 71-00-00-000-042 | Removal of the Power Plant |
| AMM 71-00-00-400-040 | Installation of the Power Plant |
| AMM 71-00-00-400-042 | Installation of the Power Plant |
| AMM 71-00-00-710-003 | Engine Automatic Start |
| AMM 79-21-10-210-004 | Check the Forward Sump Scavenge Magnetic Plug and Screen |
| AMM 80-11-10-000-001 | Removal of the Pneumatic Starter |
| AMM 80-11-10-000-002 | Removal of the Pneumatic Starter |
| AMM 80-11-10-400-001 | Installation of the Pneumatic Starter |
| AMM 80-11-10-400-002 | Installation of the Pneumatic Starter |
| AMM 80-11-20-000-001 | Removal of the Starter Shutoff Valve |
| AMM 80-11-20-000-003 | Removal of the Starter Shutoff Valve |
| AMM 80-11-20-400-001 | Installation of the Starter Shutoff Valve |
| AMM 80-11-20-400-003 | Installation of the Starter Shutoff Valve |
Subtask 80-00-00-710-119-A ** ON A/C NOT FOR ALL
A. Test
(1) Not applicable, the fault is evident.
4. Fault Isolation(1) Not applicable, the fault is evident.
Subtask 80-00-00-810-095-A ** ON A/C NOT FOR ALL
A. If the fault symptom is identified by the crew observation: ENG1 or 2 - STARTING - slow start before light off sequence:
Subtask 80-00-00-810-095-B ** ON A/C NOT FOR ALL - on the lower ECAM display unit, do a check of the starter air pressure (at least 25 PSI)
- if no, make sure that the pack valves are off. Do a check to make sure that the air source pressure is sufficient (ground supply unit, APU).
- do a check of the magnetic chip detectors for unwanted particles AMM 79-21-10-210-004.
- do a check to make sure that the core turns freely by handcranking.
- try to turn the core each 15 mn for no more than 8 hours.
- replace the engine AMM 71-00-00-000-040 and AMM 71-00-00-400-040.
- do a check of the APU bleed check valve AMM 36-12-51-200-001.
- replace the pneumatic starter AMM 80-11-10-000-001 and AMM 80-11-10-400-001.
- replace the starter shut off valve AMM 80-11-20-000-001 and AMM 80-11-20-400-001.
A. If the fault symptom is identified by the crew observation: ENG1 or 2 - STARTING - slow start before light off sequence:
Subtask 80-00-00-710-120-A ** ON A/C NOT FOR ALL - on the lower ECAM display unit, do a check of the starter air pressure (at least 25 PSI)
- if no, make sure that the pack valves are off. Do a check to make sure that the air source pressure is sufficient (ground supply unit, APU).
- do a check of the magnetic chip detectors for unwanted particles .
- do a check to make sure that the core turns freely by handcranking.
- try to turn the core each 15 mn for no more than 8 hours.
- replace the engine AMM 71-00-00-000-042 and AMM 71-00-00-400-042.
- do a check of the APU bleed check valve AMM 36-12-51-200-001.
- replace the pneumatic starter AMM 80-11-10-000-002 and AMM 80-11-10-400-002.
- replace the starter shut off valve AMM 80-11-20-000-003 and AMM 80-11-20-400-003.