# SDR 82206N71CK

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 21, 2006
- Submitted: August 22, 2006
- Operation: Air carrier
- Aircraft: [N71CK](https://openairdocs.org/aircraft/N71CK), registered now
- Make and model: Lear 36A
- Registry model: [Lear 36A](https://openairdocs.org/model/gates-lear-jet-36a) (OpenAirDocs)
- Aircraft serial: 035
- Aircraft time: 16,573 hours, 9,257 cycles
- Engine: Garrtt TFE73122B
- Engine time: 6,255 hours, 4,704 cycles
- System (JASC): [7261 · Turbine Engine Oil System](https://openairdocs.org/jasc/7261)
- Part: O-Ring
- Condition: Torn
- Location: Oil Cap
- Component: Oil Fill Cap, Garrtt
- Component part number: 5725339103
- Stage of operation: CR
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: E, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/82206N71CK

## Discrepancy

ENGINE OIL PRESSURE WAS FLUCTUATING DURING CRUISE. ENGINE WAS SHUTDOWN AS A PRECAUTIONARY MEASURE.  AIRCRAFT RETURNED TO DEPARTURE.  FOUND RT ENGINE OIL TANK FILLER CAP O-RING TORN. OIL LEVEL WAS DOWN 2.5 QTS. REPLACED O-RING WITH NEW, SERVICED ENGINE OIL WITH 2.5QTS.  PERFORMED ENGINE RUN UP, LEAKAGE CHECK, AND OIL PRESSURE CHECKS MM.

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