# SDR UALA2011120906768

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 8, 2011
- Submitted: January 3, 2012
- Operation: Air carrier
- Aircraft: [N662UA](https://openairdocs.org/aircraft/N662UA), registered now
- Make and model: Boeing 767322
- Aircraft serial: 27159
- Aircraft time: 80,447 hours, 12,915 cycles
- Engine: Pwa PW4060
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Heat Exchanger
- Part number: 51G760600U
- Part serial: 174
- Condition: Faulty
- Location: Nr 2 Idg
- 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/UALA2011120906768

## Discrepancy

RIGHT IDG VALVE STATUS MESSAGE DISPLAYED AT TOP OF DESCENT.   PERFORMED BPCU BITE CHECK PER FIM 24-20-00.  LAST FLT LEG NR 2 SHOWS COOLER VALVE WIRING FAULT.   REPLACED NR 2 ENGINE IDG AIR OIL HEAT EXCHANGER AND VALVE PER MM.

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