# SDR UALA2012101805948

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 18, 2012
- Submitted: November 9, 2012
- Operation: Air carrier
- Aircraft: [N648UA](https://openairdocs.org/aircraft/N648UA), registered now
- Make and model: Boeing 767322
- Aircraft serial: 25285
- Aircraft time: 85,701 hours, 13,681 cycles
- Engine: Pwa PW4060
- System (JASC): [7921 · Engine Oil Cooler](https://openairdocs.org/jasc/7921)
- Part: Oil Cooler
- Part number: 51G859U1600U
- Condition: Faulty
- Location: Nr 2 Engine
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2012101805948

## Discrepancy

NR 2 ENGINE-TS AOC MSGS, AOC?  6448-2 ESN 727790 - ENGINE IS DOWNLINKING CH A&B AOC TR CHECK FAIL MSG 351-23.  REMOVED NR 2 ENGINE AIR-OIL COOLER.  REF AMM 79-21-09 TASK 79-21-09-004-801.  REF EG7491-2, REPLACE NR 2 ENGINE AIR-OIL COOLER (HEAT EXCHANGER).

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