# SDR TSAA0749010

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 27, 2007
- Submitted: January 31, 2007
- Operation: Air carrier
- Aircraft: [N738AL](https://openairdocs.org/aircraft/N738AL), registered now
- Make and model: Boeing 737-73A
- Registry model: [Boeing 737-73A](https://openairdocs.org/model/boeing-737-73a) (OpenAirDocs)
- Aircraft serial: 28499
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Oil Cooler
- Part number: 1605641
- Part serial: 49570
- Condition: Unknown
- Location: Apu Oil System
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/TSAA0749010

## Discrepancy

AIRCRAFT GROUND EVENT IN SNA, THE APU AUTO SHUTDOWN FOR HIGH OIL TEMPERATURE INDICATION AND FAULT CODE 49-91005.  MAINTENANCE PERFORMED FIM TASK 49-90-00-810-801, REMOVED AND REPLACED THE APU OIL COOLER PER AMM 49-91-41-000-801.  MAINTENANCE ALSO REMOVED AND REPLACED THE APU OIL TEMPERATURE CONTROL VALVE PER AMM 49-91-21-000-801.  NO DEFECTS NOTED ON GROUND RUN.  AIRCRAFT WAS RETURNED TO SERVICE.  A FLIGHT VERIFICATION WAS COMPLETED.

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