# SDR ASAA0853469

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 1, 2008
- Submitted: September 10, 2008
- Operation: Air carrier
- Aircraft: [N559AS](https://openairdocs.org/aircraft/N559AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35178
- Aircraft time: 7,713 hours, 2,312 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Oil Filter
- Part number: 41310203
- Condition: Malfunctioned
- Location: Apu
- Component: Apu
- Component part number: 38007021
- Stage of operation: IN
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA0853469

## Discrepancy

WHILE ACCOMPLISHING TC 78349013 FOUND APU OIL FILTER DELTA P INDICATOR POPPED.  REMOVED AND REPLACED APU OIL FILTER ELEMENT NO CONTAMINATION NOTED.  RESET DELTA P INDICATOR.  INSPECTED MAGNETIC DRAIN PLUG NO CONTAMINATION NOTED.  REF AMM'S 49 91 13 & 49 91 81.  LEAK CHECK GOOD.  RAN APU FIVE MINUTES, OPS CHECK GOOD REF AMM 49 91 13.

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