# SDR HEER20161201652

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 1, 2016
- Submitted: December 1, 2016
- Operation: Air carrier
- Filed by: [PHI Aviation, LLC, repair station HEER617E](https://openairdocs.org/faa-repair-station/HEER617E/phi-aviation-llc.md) (OpenAirDocs)
- Aircraft: [N441PH](https://openairdocs.org/aircraft/N441PH), registered now
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 54081
- Aircraft time: 4,844 hours
- Engine: Allsn 250C47B
- Engine time: 2,475 hours
- System (JASC): [7260 · Turbine Engine Accessory Drive](https://openairdocs.org/jasc/7260)
- Part: Bearing
- Part number: M25010116
- Part serial: NWE106590
- Condition: Spalled
- Location: Engine Gearbox
- Part time: 2,475 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/HEER20161201652

## Discrepancy

ENGINE REMOVED 11-14-16 DUE TO METAL IN OIL.  SECONDARY BEARING EXHIBITED SPALLING BALLS.  REPLACED WITH NEW SECONDARY BEARING.

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