What was found
ENGINE REMOVED FOR REPAIR FOR A TURBINE OVERHAUL, THE TURBINE NR 5 BEARING WAS FOUND SPALLING ON OUTER RACE SPLIT. INSTALLED A NEW NR 5 BEARING
- Difficulty date
- February 20, 2017
- Submitted
- February 21, 2017
- Operation
- Air carrier
- Aircraft
- N401PH
- Make and model
- Bell 407
- Aircraft serial
- 53615
- Aircraft time
- 3,458 hours
- Engine
- Allsn 250C47B
- Engine time
- 3,282 hours
- System (JASC)
- 7250 · Turbine Section
- Part
- Bearing
- Part number
- M25010106
- Part serial
- NWJ132874
- Condition
- Spalled
- Location
- Turbine
- Part time
- 585 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.