# SDR I5PA2022042388804

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 23, 2022
- Submitted: April 28, 2022
- Operation: Air carrier
- Aircraft: [N888LT](https://openairdocs.org/aircraft/N888LT), registered now
- Make and model: Boeing 757230
- Aircraft serial: 25441
- Aircraft time: 76,740 hours, 24,851 cycles
- System (JASC): [4900 · Airborne Auxiliary Power Unit (APU) System](https://openairdocs.org/jasc/4900)
- Part: Pump
- Part number: 388019010
- Part serial: A4056
- Condition: Faulty
- Location: Apu
- Stage of operation: CR
- How discovered: C
- Nature of condition: S
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/I5PA2022042388804

## Discrepancy

ETOPS SIGNIFICANT ITEM: APU FAILED TO START IN FLIGHT INTO GUM. THE APU OPERATED NORMALLY ON THE GROUND. TROUBLESHOOTING STEPS INDICATED A FAULTY OIL PRESSURE PUMP AND DE-OIL SOLENOID VALVE. REPLACED OIL PRESSURE PUMP. OPS CHECK NORMAL ON GROUND. (SEE SDR I5PA2022042388805 FOR REPLACEMENT OF THE DE-OIL SOLENOID VALVE.)

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