# SDR CALA2013120993550

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 6, 2013
- Submitted: December 10, 2013
- Operation: Air carrier
- Aircraft: [N197UA](https://openairdocs.org/aircraft/N197UA), registered now
- Make and model: Boeing 747422
- Aircraft serial: 26901
- Aircraft time: 66,458 hours, 7,740 cycles
- Engine: Pwa PW4056
- System (JASC): [7261 · Turbine Engine Oil System](https://openairdocs.org/jasc/7261)
- Part: O-Ring
- Condition: Cut
- Location: Nr 1 Engine
- Stage of operation: IN
- How discovered: O
- Nature of condition: K
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2013120993550

## Discrepancy

ON ARRIVAL AT GATE FOUND OIL LEAKING FROM OIL SERVICE DOOR NR 1 ENG.  FOUND OIL CAP O RING CUT, REPLACED O RING NR 1 ENG.

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