# SDR UALA2012042002386

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 19, 2012
- Submitted: May 24, 2012
- Operation: Air carrier
- Aircraft: [N670UA](https://openairdocs.org/aircraft/N670UA), registered now
- Make and model: Boeing 767322
- Aircraft serial: 29240
- Aircraft time: 45,765 hours, 11,870 cycles
- Engine: Pwa PW4056
- System (JASC): [7311 · Engine Fuel/Oil Cooler](https://openairdocs.org/jasc/7311)
- Part: B-Nut
- Condition: Leaking
- Location: Fuel/Oil Cooler
- Stage of operation: IN
- How discovered: V
- Nature of condition: K
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2012042002386

## Discrepancy

NR 1 ENGINE HAS FUEL LEAK TOWARDS THE FRONT LT SIDE OF ENGINE.  FUEL IS RUNNING INSIDE THRUST REVERSER AND COMING OUT HOLE IN AFT SECTION OF THRUST REVERSER.  RAN NR 1 ENG AND FOUND STEADY STREAM OF FUEL TO BE COMING FROM 'FUEL-OIL COOLER ASSY, SUSPECT INBD LARGE B-NUT.  GOT 1 FULL TURN FROM FRONT ASSY 11-16' LINE FACING FWD.  SECURED B-NUT ON FUEL OIL COOLER, RAN NR 1 ENG, NO LEAKS NOTED.

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