# SDR AALA20001322

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 10, 2000
- Submitted: October 12, 2000
- Operation: Air carrier
- Aircraft: N552AA
- Make and model: Doug DC-9-82
- Registry model: [Doug DC-9-82](https://openairdocs.org/model/mcdonnell-douglas-dc-9-82) (OpenAirDocs)
- Aircraft serial: 53034
- System (JASC): [4920 · APU Core Engine](https://openairdocs.org/jasc/4920)
- Part: Apu
- Part number: 5940405503
- Condition: Leaking
- Location: Apu Bay
- Stage of operation: CL
- How discovered: O
- Nature of condition: K, B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA20001322

## Discrepancy

ELP - FLT 750 - AFTER TAKEOFF FLIGHT CREW REPORTED SMOKE IN COCKPIT.  RETURNED AND LANDED ELP WITHOUT INCIDENT.  SEAL LEAKING ON AUXILIARY POWER UNIT.  REPLACED AUXILIARY POWER UNIT.  SYSTEM GROUND CHECK NORMAL OPERATION.  (M)

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