# SDR SWAA2025120442741

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 4, 2025
- Submitted: December 4, 2025
- Operation: Air carrier
- Aircraft: [N913WN](https://openairdocs.org/aircraft/N913WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 29840
- Aircraft time: 56,419 hours, 34,436 cycles
- System (JASC): [4920 · APU Core Engine](https://openairdocs.org/jasc/4920)
- Part: Apu
- Condition: Shutdown
- Location: Zone 100
- Stage of operation: CR
- 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/SWAA2025120442741

## Discrepancy

AT CRUISE FL 400 RECEIVED APU LOP LIGHT. APU DID AUTO SHUTDOWN NH30.  PERFORMED OPERATONAL TEST OF APU AND TEST PASS IAW AMM 49-11-00.

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