# SDR HEEA129747

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 5, 2010
- Submitted: November 8, 2010
- Operation: Air carrier
- Aircraft: [N433P](https://openairdocs.org/aircraft/N433P), registered now
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 53861
- Aircraft time: 471 hours
- Engine: Allsn 250C47B
- Engine time: 471 hours
- System (JASC): [7250 · Turbine Section](https://openairdocs.org/jasc/7250)
- Part: Bearing
- Part number: 6871505
- Part serial: MP087785
- Condition: Spalled
- Location: Engine
- Part time: 471 hours
- Component: Turbine
- Component part number: 23063354
- 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/HEEA129747

## Discrepancy

ENGINE REMOVED DUE TO METAL IN OIL.  NR5 BEARING EXHIBITED SPALLING OF OUTER RACE, N1 COUPLING PN 23032345 IS OUT OF BALANCE, WASHER PN 6848996-3 IS WORN, CUP WASHER PN 6889319 HAD METAL FALLOUT AT SAFETY LOCATION.  SCRAPPED PARTS AND REPLACED WITH NEW.

---
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.