# SDR TSAA0549045

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 8, 2005
- Submitted: October 12, 2005
- Operation: Air carrier
- Aircraft: [N739AL](https://openairdocs.org/aircraft/N739AL), registered now
- Make and model: Boeing 737-73A
- Registry model: [Boeing 737-73A](https://openairdocs.org/model/boeing-737-73a) (OpenAirDocs)
- Aircraft serial: 28500
- Engine: Ge CFM567B24
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Switch
- Part number: 38762552
- Part serial: 990922701091
- Condition: Defective
- Location: Apu
- Stage of operation: NR
- How discovered: 9
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/TSAA0549045

## Discrepancy

AUTO SHUTDOWN LOW OIL PRESSURE OCCURRED ON RAMP.  TROUBLESHOT IAW FIM 49-90-00-810-803 FOUND APU LOP INOP.  REPLACED APU LOP, OPS CHECK OK.  LEAK CHECK OK.  NO DEFECTS NOTED. AIRCRAFT RETURNED TO SERVICE.

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