# SDR BB05095

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 29, 2005
- Submitted: November 1, 2005
- Operation: Air carrier
- Aircraft: N633AU
- Make and model: Boeing 757225
- Aircraft serial: 27811
- System (JASC): [4900 · Airborne Auxiliary Power Unit (APU) System](https://openairdocs.org/jasc/4900)
- Part: Idg
- Condition: Failed
- Location: Apu
- Stage of operation: CR
- How discovered: O
- Nature of condition: H
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/BB05095

## Discrepancy

APU SHUTDOWN IN FLIGHT WHILE THE LEFT IDG WAS ALREADY ON MEL.  MAINTENANCE PLACED THE APU ON MEL AND CLEARED THE LEFT IDG MEL BY REPLACING THE IDG.

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