# SDR ASAA1057276

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 21, 2010
- Submitted: January 25, 2010
- Operation: Air carrier
- Aircraft: [N579AS](https://openairdocs.org/aircraft/N579AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35187
- Aircraft time: 11,117 hours, 3,299 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Filter
- Part number: 3043002
- Condition: Defective
- Location: Apu
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA1057276

## Discrepancy

APU DELTA P INDICATOR MISSING FROM FILTER BOWL.  REMOVED AND REPLACED OIL FILTER & BOWL ASSY ON APU.  NO CONTAMINATION FOUND.  OPS CHECK GOOD REF MM 49 91 12.

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