# SDR I5PA2025031275701

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 12, 2025
- Submitted: March 17, 2025
- 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: 67,674 hours, 34,968 cycles
- System (JASC): [4900 · Airborne Auxiliary Power Unit (APU) System](https://openairdocs.org/jasc/4900)
- Part: Pressure Sensor
- Part number: 38760355
- Part serial: 071121413829
- Condition: Faulted
- Location: Apu
- Stage of operation: TX
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/I5PA2025031275701

## Discrepancy

FLT NO: MGE 401. ESI - APU SHUTDOWN 2X WHILE ENG STARTING. PERFORMED ECU BITE CHECK FOUND REVERSE FLOW MSG. R/R PRESSURE SENSOR PER AMM 49-61-04. OPS CHECK GOOD.

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