What was found
ENGINE REMOVED 7-5-16 DUE TO WHINING NOISE. FOUND NR 5 BEARING SPALLED AT OUTER RACE SPLIT. BEARING REPLACED.
- Difficulty date
- July 19, 2016
- Submitted
- July 19, 2016
- Operation
- Air carrier
- Aircraft
- N439PH
- Make and model
- Bell 407
- Aircraft serial
- 53999
- Aircraft time
- 7,490 hours
- Engine
- Allsn 250C47B
- Engine time
- 16,032 hours
- System (JASC)
- 7250 · Turbine Section
- Part
- Bearing
- Part number
- M25010106
- Part serial
- NWL150259
- Condition
- Spalled
- Location
- Engine
- Part time
- 50 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.