# SDR LM1R20120731002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 18, 2012
- Submitted: July 31, 2012
- Operation: General aviation
- Filed by: [Pratt and Whitney Engine Services Inc, repair station LM1R301K](https://openairdocs.org/faa-repair-station/LM1R301K/pratt-and-whitney-engine-services-inc.md) (OpenAirDocs)
- Aircraft: [N749QS](https://openairdocs.org/aircraft/N749QS), registered now
- Make and model: Gulstm 200
- Aircraft serial: 165
- Aircraft time: 3,417 hours, 2,132 cycles
- Engine: Pwc PW306A
- Engine time: 3,417 hours, 2,132 cycles
- System (JASC): [7261 · Turbine Engine Oil System](https://openairdocs.org/jasc/7261)
- Part: Carbon Seal
- Condition: Failed
- Location: Engine
- Part time: 3,417 hours, 2,132 cycles
- Component: Engine, Pwc
- Stage of operation: CL
- How discovered: O
- Nature of condition: B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/LM1R20120731002

## Discrepancy

AFTER TAKEOFF, CREW NOTICED BURNING ODOR AND MIST IN CABIN. PERFORMED EMERGENCY RETURN TO DEPARTURE.  FOUND OIL STREAKING IN EXHAUST AND FOD IN COMPRESSOR SECTION.  ON TEARDOWN, NR 2 BEARING CARBON SEAL WAS FOUND FRACTURED WITH FRAGMENTS OF THE SEAL HAVING MIGRATED INTO THE GAS PATH CAUSING FOD CONDITION.

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