# SDR 8MHR201807130001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 13, 2018
- Submitted: July 13, 2018
- Operation: General aviation
- Filed by: [Keystone Turbine Services, LLC, repair station 8MHR895B](https://openairdocs.org/faa-repair-station/8MHR895B/keystone-turbine-services-llc.md) (OpenAirDocs)
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Engine: Allsn 250C47B
- System (JASC): [7250 · Turbine Section](https://openairdocs.org/jasc/7250)
- Part: Turbine Wheel
- Part number: 6898663
- Part serial: X625321
- Condition: Cracked
- Location: Engine
- Part time: 1,945 hours, 1,416 cycles
- Stage of operation: IN
- How discovered: D
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/8MHR201807130001

## Discrepancy

CRACKED TURBINE WHEEL, IN AREA SDJACENT TO THE CURVIC COUPLING.

---
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.