# SDR UALA2011081604357

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 16, 2011
- Submitted: August 17, 2011
- Operation: Air carrier
- Aircraft: [N216UA](https://openairdocs.org/aircraft/N216UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 30549
- Aircraft time: 45,401 hours, 5,760 cycles
- Engine: Pwa PW40903
- System (JASC): [7920 · Engine Oil Distribution (Airframe Furnished)](https://openairdocs.org/jasc/7920)
- Part: B-Nut
- Condition: Unsecure
- Location: Oil System
- Stage of operation: IN
- How discovered: O
- Nature of condition: K
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2011081604357

## Discrepancy

NR 2 ENGINE HAS EVIDENCE OF ENGINE OIL LEAK FROM THE NR 3  BEARING SCAVENGE TUBE.  LEAK APPEARS TO BE COMING FROM THE B-NUT AT THE ENGINE CASE END OF THE LINE.  SECURED SCAVENGE TUBE B-NUT AND RE-SAFETIED, RAN ENG LEAK CHECKED OKAY.

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