What was found
ENGINE REMOVED 3-8-16, DUE TO CYCLED OUT 1ST AND 2ND STAGE TURBINE WHEELS. REMOVED NR 5 BEARING DUE TO SPALLING ON OUTER RACE AT SPLIT. REPLACED WITH NEW NR 5 BEARING.
- Difficulty date
- April 12, 2016
- Submitted
- April 14, 2016
- Operation
- General aviation
- Aircraft
- N434PH
- Make and model
- Bell 407
- Aircraft serial
- 53773
- Aircraft time
- 2,459 hours
- Engine
- Allsn 250C47B
- Engine time
- 1,053 hours
- System (JASC)
- 7250 · Turbine Section
- Part
- Bearing
- Part number
- M25010106
- Part serial
- NWD103311
- Condition
- Spalled
- Location
- Turbine Wheel
- Part time
- 1,053 hours
- Component
- Turbine
- Component part number
- M25010557
- 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.