What was found
THE NR 5 BEARING EXHIBITED SPALLING ON THE OUTER RACE SPLIT. INSTALLED A NEW NR 5 BEARING.
- Difficulty date
- February 7, 2018
- Submitted
- February 8, 2018
- Operation
- Air carrier
- Aircraft
- N428PH
- Make and model
- Bell 407
- Aircraft serial
- 53754
- Aircraft time
- 3,880 hours
- Engine
- Allsn 250C47B
- Engine time
- 9,232 hours
- System (JASC)
- 7250 · Turbine Section
- Part
- Bearing
- Part number
- M25010106
- Part serial
- NWC150482
- Condition
- Spalled
- Location
- Turbine Section
- Part time
- 472 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.