# SDR 2026F00118

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 3, 2026
- Submitted: June 3, 2026
- Operation: General aviation
- Aircraft: [N284PM](https://openairdocs.org/aircraft/N284PM), registered now
- Make and model: Beech C90
- Registry model: [Beech C90](https://openairdocs.org/model/beech-c90) (OpenAirDocs)
- Aircraft serial: LJ734
- Aircraft time: 17,712 hours, 23,086 cycles
- Engine: Pwa PT6A21
- Engine time: 6,090 hours, 5,963 cycles
- Propeller: Hartzl HCB3TN3
- System (JASC): [7230 · Turbine Engine Compressor Section](https://openairdocs.org/jasc/7230)
- Part: Compressor
- Condition: Faulted
- Location: Engine
- Stage of operation: AP
- How discovered: O
- Nature of condition: O
- Precautionary procedure: L, E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2026F00118

## Discrepancy

LOSS OF TORQUE AND RPM TO THE PROP, CURRENTLY UNSURE IF PGB CAUSED ENGINE FAILURE OR IF THE ENGINE FAILED.  AFTER SPINNING THE COMPRESSOR BY HAND IT WAS NOTED THAT THERE WAS DRAG AND A RASPY SOUND COMING FROM THE COMPRESSOR.  ENGINE WILL GO OUT FOR SHOP VISIT TO DETERMINE FAILURE.  ON NOVEMBER 1, 2020 THE ENGINE WAS ENTERED INTO THE MORE STC (SE000EN) PROGRAM BUT NOT RECORDED ON THE D101 OPSPECS.

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