What was found
ENGINE DISASSEMBLED 9-26-15 DUE TO METAL IN OIL. NR 5 BEARING REMOVED DUE TO SPALLING ON BALLS, CRACKED AND ERODED SEPERATOR. REPLACED NR 5 BEARING. PART WILL BE RETURNED TO MFG FOR FURTHER EVALUATION.
- Difficulty date
- October 8, 2015
- Submitted
- October 9, 2015
- Operation
- General aviation
- Aircraft
- N440PH
- Make and model
- Bell 407
- Aircraft serial
- 53327
- Aircraft time
- 17,943 hours
- Engine
- Allsn 250C47B
- Engine time
- 12,405 hours
- System (JASC)
- 7250 · Turbine Section
- Part
- Bearing
- Part number
- M25010106
- Part serial
- NWC140041
- Condition
- Spalled
- Location
- Turbine
- Part time
- 1,261 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.