# SDR ASAA0954854

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 19, 2009
- Submitted: March 23, 2009
- Operation: Air carrier
- Aircraft: [N559AS](https://openairdocs.org/aircraft/N559AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35178
- Aircraft time: 9,796 hours, 2,874 cycles
- System (JASC): [4920 · APU Core Engine](https://openairdocs.org/jasc/4920)
- Part: Apu
- Part number: 38007021
- Part serial: P7222
- Condition: Leaking
- Part time: 9,796 hours, 2,874 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: K
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA0954854

## Discrepancy

APU IS LEAKING OIL FROM THE DRAIN MAST CAUSING A PUDDLE ON THE GROUND & IS 1 QUART LOW.  PERFORMED DRAIN MAST INSPECTION REF MM 49 16 11 200 801 RAN APU FOR 10 MINS & MIDDLE DRAIN IS LEAKING OIL (LOAD COMPRESSOR SEAL).  REPLACED APU REF AMM 49 11 00.

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