# SDR ASAA1159090

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 26, 2011
- Submitted: March 3, 2011
- Operation: Air carrier
- Aircraft: [N563AS](https://openairdocs.org/aircraft/N563AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35180
- Aircraft time: 16,517 hours, 5,166 cycles
- System (JASC): [4920 · APU Core Engine](https://openairdocs.org/jasc/4920)
- Part: Apu
- Part number: 38007021
- Part serial: P7287
- Condition: Malfunctioned
- Location: Tail
- Part time: 7,430 hours, 7,996 cycles
- 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/ASAA1159090

## Discrepancy

STRONG UNPLEASANT ODOR FROM AIR CONDITIONING SOON AS PACKS TURNED ON.  USING BLEED AIR FROM APU A/C AIR HAS LIGHT ODOR.  FOUND OIL ODOR IN APU BLEED AIR DUCT DOWNSTREAM OF BLEED AIR VALVE.  REPLACED APU REF 49 11 00 400 803 STEP L PG 10.  COMPLETED INSTALL OF APU IAW 49 0 400 803.  OPS AND LEAK CHECK GOOD IAW 49 11 0 400 803.

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