# SDR 8HBR20230730053

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 5, 2023
- Submitted: July 31, 2023
- Operation: General aviation
- Filed by: [Hillsboro Aero Academy LLC, repair station 8HBR698C](https://openairdocs.org/faa-repair-station/8HBR698C/hillsboro-aero-academy-llc.md) (OpenAirDocs)
- Aircraft: [N924SH](https://openairdocs.org/aircraft/N924SH), registered now
- Make and model: Robsin R22
- Aircraft serial: 3871
- Aircraft time: 8,438 hours
- System (JASC): [6300 · Main Rotor Drive System](https://openairdocs.org/jasc/6300)
- Part: Seal
- Part number: A9661
- Part serial: NA
- Condition: Faulty
- Location: Sprag Clutch
- Part time: 99 hours
- Component: Sprag Clutch, Robsin
- Component part number: A1882
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/8HBR20230730053

## Discrepancy

+DURING A 100 HOUR INSPECTION IT WAS FOUND THAT THE AFT SPRAG CLUTCH SEAL WAS MIGRATING OUT OF THE RETAINER HOUSING.

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