# SDR SWAA2019050732413

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 6, 2019
- Submitted: May 7, 2019
- Operation: Air carrier
- Aircraft: [N928WN](https://openairdocs.org/aircraft/N928WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 36890
- Aircraft time: 37,435 hours, 22,557 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Pressure Switch
- Part number: 38007021
- Condition: Failed
- Location: Apu
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2019050732413

## Discrepancy

DIVERSION, APU FAILED IN FLIGHT ABOVE 35,000 (WORKS ON GROUND).  R&R LOW OIL PRESSURE SWITCH PER AMM.

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