# SDR AALA202111090515

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 6, 2021
- Submitted: November 9, 2021
- Operation: Air carrier
- Aircraft: [N802AW](https://openairdocs.org/aircraft/N802AW), registered now
- Make and model: Airbus A319-132
- Registry model: [Airbus A319-132](https://openairdocs.org/model/airbus-a319-132) (OpenAirDocs)
- Aircraft serial: 924
- Aircraft time: 71,387 hours, 32,711 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: O-Ring
- Condition: Leaking
- Location: Zone 100 - Fuse
- Stage of operation: TX
- How discovered: V
- Nature of condition: A, B
- Precautionary procedure: E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202111090515

## Discrepancy

AIRCRAFT WAS GROUNDED: AFTER AIRCRAFT BOARDING THE JET BRIDGE WAS PULLED AWAY THE GROUND PERSONNEL REPORT FLAME IMINATING FROM APU AND LARGE AMOUNT OF SMOKE. THE APU AUTO-SHUTDOWN BEFORE THE CREW COULD MANUALLY SHUT IT DOWN. MAINTENANCE FOUND THE APU FUEL LOW PRESSURE SHUTOFF VALVE ACTUATOR WAS STUCK OPEN AND REPLACED IT PER AMM 28-29-51-400-001. (AALA202111091189) A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED. MAINTENANCE INSPECTED THE APU EXHAUST AND AFT TURBINE BEARING AREA FOR OIL LEAKS OR PUDDLING WITH NO ISSUES NOTED. THEY FOUND THE LOWER AFT SCAVENGE LINE O-RING LEAKING AND REPLACED IT PER AMM 49-91-53-400. (AALA202111090515) **SUPPLEMENTAL REPORT WILL BE SUBMITTED** (OPEN)

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