# SDR HEER20160729926

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 29, 2016
- Submitted: July 29, 2016
- Operation: Air carrier
- Aircraft: [N406PH](https://openairdocs.org/aircraft/N406PH), registered now
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 53198
- Aircraft time: 18,051 hours
- Engine: Allsn 250C47B
- Engine time: 11,812 hours
- System (JASC): [7250 · Turbine Section](https://openairdocs.org/jasc/7250)
- Part: Bearing
- Part number: M25010106
- Part serial: NWB151714
- Condition: Spalled
- Location: Engine Turbine
- Part time: 1,058 hours
- Component: Turbine, Allsn
- Component part number: M25010557
- 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/HEER20160729926

## Discrepancy

ENGINE REMOVED 7-13-16 FOR TURBINE OVERHAUL.  NR 5 BEARING EXHIBITED SPALLING AT OUTER RACE SPLIT.  INSTALLED A NEW NR 5 BEARING.

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