What was found
ENGINE REMOVED 3-20-15 DUE TO METAL IN OIL. NR 5 BEARING EXHIBITS SEVERELY SPALLED BALLS, OUTER RACE AND DAMAGED SEPERATOR. INSTALLED NEW N R5 BEARING. PART WILL BE RETURNED TO ROLLS ROYCE FOR FURTHER EVALUATION.
- Difficulty date
- April 9, 2015
- Submitted
- April 9, 2015
- Operation
- General aviation
- Aircraft
- N457PH
- Make and model
- Bell 407
- Aircraft serial
- 53121
- Aircraft time
- 2,882 hours
- Engine
- Allsn 250C47B
- Engine time
- 2,843 hours
- System (JASC)
- 7250 · Turbine Section
- Part
- Bearing
- Part number
- 6871505
- Part serial
- MP72926
- Condition
- Spalled
- Location
- Nr 5
- 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.