# SDR 2008UALA05789

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 18, 2008
- Submitted: September 24, 2008
- Operation: Air carrier
- Aircraft: [N216UA](https://openairdocs.org/aircraft/N216UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 30549
- Aircraft time: 32,826 hours, 4,354 cycles
- Engine: Pwa PW40903
- Engine time: 23,553 hours, 31,395 cycles
- System (JASC): [7261 · Turbine Engine Oil System](https://openairdocs.org/jasc/7261)
- Part: Seal
- Condition: Leaking
- Location: Gen Drive
- Stage of operation: IN
- How discovered: 9
- Nature of condition: K
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2008UALA05789

## Discrepancy

NR 2 ENG HAS EVIDENCE OF OIL LEAK ON CORE COWL.  RAN ENG AND FOUND BACK UP GEN DRIVE DRAIN TUBE LEAKING.  REPLACED BACK UP GEN DRIVE SEAL.  REPLACED BUG.

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