What was found
ENGINE REMOVED TO UPGRADE THE NR 5 BEARING. OUTER RACE WAS SPALLING AT SPLIT. REPLACED THE BEARING.
- Difficulty date
- January 19, 2017
- Submitted
- January 23, 2017
- Operation
- Air carrier
- Aircraft
- N438PH
- Make and model
- Bell 407
- Aircraft serial
- 53622
- Aircraft time
- 5,149 hours
- Engine
- Allsn 250C47B
- Engine time
- 10,266 hours
- System (JASC)
- 7250 · Turbine Section
- Part
- Bearing
- Part number
- M25010106
- Part serial
- NWC150471
- Condition
- Spalled
- Location
- Nr 5
- Part time
- 781 hours
- Component
- Turbine
- 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.