# SDR ASAA0955930

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 10, 2009
- Submitted: June 15, 2009
- Operation: Air carrier
- Aircraft: [N560AS](https://openairdocs.org/aircraft/N560AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35179
- Aircraft time: 10,919 hours, 3,467 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Indicator
- Part number: 7590361101
- Condition: Malfunctioned
- Location: Apu Filter
- Stage of operation: IN
- How discovered: O
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA0955930

## Discrepancy

APU DELTA P INDICATOR ON LUBE FILTER HOUSING EXTENDED.  REPLACED LUBE FILTER ELEMENT AND REST DELTA P INDICATOR ON LUBE FILTER HOUSING.  NO CONTAMINANTS FOUND IN FILTER.  REF MM 49 91 12.  OPS CHECK GOOD.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.