What was found
ENGINE REMOVED 5-28-16 FOR REPAIR DUE TO TURBINE O/H AND 2000 HR INSPECTION. TURBINE NR 5 BEARING SPALLING ON OUTER RACE SPLIT. REPLACED WITH NEW NR 5 BEARING.
- Difficulty date
- June 7, 2016
- Submitted
- June 10, 2016
- Operation
- General aviation
- Aircraft
- N421PH
- Make and model
- Bell 407
- Aircraft serial
- 53749
- Aircraft time
- 9,268 hours
- Engine
- Allsn 250C47B
- Engine time
- 12,159 hours
- System (JASC)
- 7250 · Turbine Section
- Part
- Bearing
- Part number
- M25010106
- Part serial
- NWF140809
- Condition
- Spalled
- Location
- Turbine
- Part time
- 842 hours
- 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.