# SDR USAABB03126

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 28, 2003
- Submitted: August 28, 2003
- Operation: Air carrier
- Aircraft: N631AU
- Make and model: Boeing 757-2B7
- Registry model: [Boeing 757-2B7](https://openairdocs.org/model/boeing-757-2b7) (OpenAirDocs)
- Aircraft serial: 27809
- System (JASC): [4920 · APU Core Engine](https://openairdocs.org/jasc/4920)
- Part: Apu
- Part number: 380029815
- Condition: Malfunctioned
- Location: Apu Bay
- Stage of operation: NR
- How discovered: O
- Nature of condition: B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAABB03126

## Discrepancy

PIT - FLT 44 - PILOT NOTED BURNED OIL SMELL FROM AIR CONDITIONING SYSTEM.  MAINTENANCE RAN AND ISOLATED BOTH PACKS.  A SLIGHT ODOR WAS NOTED.  PACKS WERE RUN AT FULL HOT AND THE ODOR DISSIPATED.  ON A FOLLOWING FLIGHT, THE ODOR RETURNED.  MAINTENANCE REPLACED THE APU.  (M)

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