# SDR HEER20150419008

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 19, 2015
- Submitted: April 19, 2015
- Operation: General aviation
- Aircraft: [N421PH](https://openairdocs.org/aircraft/N421PH), registered now
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 53749
- Aircraft time: 8,425 hours
- Engine: Allsn 250C47B
- Engine time: 2,125 hours
- System (JASC): [7260 · Turbine Engine Accessory Drive](https://openairdocs.org/jasc/7260)
- Part: Bearing
- Part number: 6889326
- Part serial: MP006903
- Condition: Spalled
- Location: Gearbox
- Part time: 2,125 hours
- Component: Gearbox
- Component part number: 23063393
- 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/HEER20150419008

## Discrepancy

ENGINE REMOVED 4-9-15 DUE TO METAL IN OIL.  PTO BALL BEARING EXHIBITS SPALLING ON BALLS.  REPLACED PTO BALL BEARING.

---
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.