What was found
ENGINE REMOVED 3-15-16 DUE TO CYCLED TURBINE WHEELS. NR 5 BEARING EXHIBITED SPALLING AT OUTER RACE SPLIT. REPLACED BEARING.
- Difficulty date
- April 14, 2016
- Submitted
- April 14, 2016
- Operation
- General aviation
- Filed by
- HEER617E
PHI Aviation, LLC - Aircraft
- N4999
- Make and model
- Bell 407
- Aircraft serial
- 53323
- Aircraft time
- 8,351 hours
- Engine
- Allsn 250C47B
- Engine time
- 13,450 hours
- System (JASC)
- 7250 · Turbine Section
- Part
- Bearing
- Part number
- M25010106
- Part serial
- NWC140124
- Condition
- Spalled
- Location
- Turbine Wheel
- Part time
- 561 hours
- Component
- Turbine · Allsn
- Component part number
- 23063354
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.