# SDR COZA20110304001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 4, 2011
- Submitted: March 8, 2011
- Operation: Air carrier
- Aircraft: [N737KA](https://openairdocs.org/aircraft/N737KA), registered now
- Make and model: Boeing 737-7BX
- Registry model: [Boeing 737-7BX](https://openairdocs.org/model/boeing-737-7bx) (OpenAirDocs)
- Aircraft serial: 30740
- Aircraft time: 23,585 hours, 15,880 cycles
- System (JASC): [7910 · Engine Oil Storage (Airframe Furnished)](https://openairdocs.org/jasc/7910)
- Part: O-Ring
- Condition: Out Of Position
- Location: Oil Cap
- Stage of operation: TX
- 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/COZA20110304001

## Discrepancy

ON POSTFLIGHT, OIL WAS DISCOVERED ON THE RIGHT ENGINE COWLING.  O-RING ON OIL TANK CAP WAS FOUND ROLLED.  INSPECTED O-RING WITH NO DEFECTS NOTED.  RESEATED O-RING AND OIL CAP.  PERFORMED ENGINE RUN WITH NO LEAKS FOUND.  PERFORMED ETOPS VERIFICATION FLIGHT WITH OPS NORMAL.  OIL CONSUMPTION WAS FOUND TO BE 1 QUART LOWER THAN NORMAL.  O-RING HAS BEEN REPLACED.

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