# SDR HEEA967582

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 16, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N721MB](https://openairdocs.org/aircraft/N721MB), registered now
- Make and model: Bolkms BO105S
- Aircraft serial: S752
- Engine: Allsn 250C20B
- System (JASC): [7250 · Turbine Section](https://openairdocs.org/jasc/7250)
- Part: Wheel
- Part number: 6886407
- Condition: Defective
- Location: 1st Stage
- Part time: 750 hours
- Component: 6898735
- Stage of operation: IN
- Nature of condition: B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HEEA967582

## Discrepancy

ENGINE REMOVED DUE TO SMOKE ON SHUTDOWN.  UPON INSPECTION OF TURBINE PARTS NOTED THE FOLLOWING:  MINOR SULFIDATION ON ALL 1ST STAGE WHEEL BLADES. SCRAPPED 1ST STAGE WHEEL.

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