# SDR 2025F00224

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 16, 2025
- Submitted: September 18, 2025
- Operation: General aviation
- Aircraft: [N96GB](https://openairdocs.org/aircraft/N96GB), registered now
- Make and model: Beech 58
- Registry model: [Beech 58](https://openairdocs.org/model/beech-58) (OpenAirDocs)
- Aircraft serial: TH882
- Aircraft time: 8,497 hours
- Engine: Cont IO520CB
- Engine time: 258 hours
- Propeller: Hartzl BHCJ2YF2C
- System (JASC): [6114 · Propeller Hub Section](https://openairdocs.org/jasc/6114)
- Part: Piston
- Condition: Separated
- Location: Rt Propeller Hub
- Component: Hub, Hartzl, BHCJ2YF2CUF
- Component part number: D24841
- Stage of operation: LD
- How discovered: O
- Nature of condition: Z
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2025F00224

## Discrepancy

PISTON CYLINDER BECAME SEPARATED FROM THE HUB. IT APPEARS THAT THE THREADS STRIPPED OUT OF THE HUB ABOUT 1/8 INCH. AT THIS TIME WE ARE SENDING TO H&S  PROPELLER IN MICHIGAN FOR AN DETAILED TEAR DOWN INSPECTION REPORT TO DETERMINE THE FAILURE.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.