What was found
ENGINE REMOVED 7-31-15 DUE TO METAL IN OIL. CAUSE DETERMINED TO BE TURBINE NR 5 BEARING SPALLING ON OUTER RACE. PART SUBMITTED FOR MFG WARRANTY CREDIT ON FAA 1439578661314. PART WILL BE RETURNED TO MFG FOR FAILURE INVESTIGATION.
- Difficulty date
- August 19, 2015
- Submitted
- August 19, 2015
- Operation
- General aviation
- Aircraft
- N457PH
- Make and model
- Bell 407
- Aircraft serial
- 53121
- Aircraft time
- 3,471 hours
- Engine
- Allsn 250C47B
- Engine time
- 13,233 hours
- System (JASC)
- 7250 · Turbine Section
- Part
- Bearing
- Part number
- M25010557
- Part serial
- CAT44122
- Condition
- Spalled
- Location
- Nr 5
- Part time
- 589 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.