# SDR DL75K050715

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 17, 2005
- Submitted: November 30, 2005
- Operation: Air carrier
- Aircraft: [N6707A](https://openairdocs.org/aircraft/N6707A), registered now
- Make and model: Boeing 757232
- Aircraft serial: 30395
- Aircraft time: 18,610 hours, 7,860 cycles
- Engine: Pwa PW2037
- Engine time: 21,788 hours, 9,437 cycles
- System (JASC): [4900 · Airborne Auxiliary Power Unit (APU) System](https://openairdocs.org/jasc/4900)
- Part: Ecu
- Condition: Inoperative
- Location: Apu
- Stage of operation: CL
- How discovered: O
- Nature of condition: H, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DL75K050715

## Discrepancy

OFF LT IN GEN CONT SWITCH.  ATTEMPTED ONE RESET. GEN OFF LIGHT RE-ILLUMINATED.  DURING CLIMBOUT APU LIGHT, ATTEMPTED ONE RESTART APU RPM 103 PERCENT AND APU FAULT THE SECOND TIME.  T/S PER FIM.  PERFORMED BITE ON ECU AND FOUND OVERSPEED ON APU NOT OPERATING.  MINI FLAG SHOWED P2 SENSOR.  REMOVED AND REPLACED P2 SENSOR PER AMM.  RAN APU, ALL CHECKS NORMAL.

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