What was found
ENGINE REMOVED 10-28-15 DUE TO TURBINE OVERHAUL. NR 5 BEARING EXHIBITED SPALLING OF OUTER RACE AT SPLIT. INSTALLED NEW PART.
- Difficulty date
- December 2, 2015
- Submitted
- December 3, 2015
- Operation
- General aviation
- Aircraft
- N474A
- Make and model
- Bell 407
- Aircraft serial
- 53545
- Aircraft time
- 2,806 hours
- Engine
- Allsn 250C47B
- Engine time
- 1,743 hours
- System (JASC)
- 7250 · Turbine Section
- Part
- Bearing
- Part number
- 6871505
- Part serial
- MP088122
- Condition
- Spalled
- Location
- Nr 5
- Part time
- 1,743 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.