# SDR I5PA2026062275706

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 23, 2026
- Submitted: June 26, 2026
- Operation: Air carrier
- Aircraft: [N757QM](https://openairdocs.org/aircraft/N757QM), registered now
- Make and model: Boeing 757-29J
- Registry model: [Boeing 757-29J](https://openairdocs.org/model/boeing-757-29j) (OpenAirDocs)
- Aircraft serial: 27203
- Aircraft time: 69,756 hours, 35,451 cycles
- System (JASC): [4940 · APU Start/Ignition System](https://openairdocs.org/jasc/4940)
- Part: Pressure Switch
- Part number: 99193S0CN
- Part serial: 38760483
- Condition: Faulted
- Location: Apu
- Stage of operation: DE
- 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/I5PA2026062275706

## Discrepancy

FLIGHT MGE301,   APU INFLIGHT START FAILED.   FOUND APU DIFF PRESSURE SWITCH FAULTY. R & R DIFFERENTIAL PRESSURE SWITCH IAW AMM. OPS CHECK NORMAL, APU VERIFICATION FLIGHT SUCCESSFUL.

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