# SDR HEER20150811578

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 11, 2015
- Submitted: August 12, 2015
- Operation: General aviation
- Filed by: [PHI Aviation, LLC, repair station HEER617E](https://openairdocs.org/faa-repair-station/HEER617E/phi-aviation-llc.md) (OpenAirDocs)
- Aircraft: [N433PH](https://openairdocs.org/aircraft/N433PH), registered now
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 53421
- Aircraft time: 5,084 hours
- Engine: Allsn 250C47B
- Engine time: 10,753 hours
- System (JASC): [7250 · Turbine Section](https://openairdocs.org/jasc/7250)
- Part: Bearing
- Part number: M25010106
- Part serial: NWC140070
- Condition: Spalled
- Location: Engine
- Part time: 934 hours
- 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/HEER20150811578

## Discrepancy

ENGINE REMOVED DUE TO A CRACKED EXHAUST COLLECTOR.  NR 5 BEARING PROBABLE SPALLING ON OUTER RACE SPLIT.  RETURNED TO MFG FOR FURTHER EVALUATION.

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