# SDR 98ZZZX3661

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 17, 1998
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: N72CK
- Make and model: Lear 35A
- Registry model: [Lear 35A](https://openairdocs.org/model/gates-learjet-35a) (OpenAirDocs)
- Aircraft serial: 165
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Breather Valve
- Part number: 30715648
- Condition: Failed
- Location: Engine
- Stage of operation: NR
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/98ZZZX3661

## Discrepancy

CREW NOTICED THE PRESENCE OF OILY SMOKE ENTERING CABIN DURING CRUISE FLIGHT.  UNEVENTFUL LANDING WAS MADE.  REPLACED FAULTY RT BREATHER PRESSURIZATION VALVE.  OPERATIONALLY CHECK AND LEAK CHECKED NORMAL.

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