What was found
TURBINE REMOVED 2-5-17 FOR OVERHAUL. REMOVED NR 5 BEARING DUE TO FOUND SPALLING ON OUTER RACE AT SPLIT. SCRAPPED PART AND REPLACED WITH NEW BEARING.
- Difficulty date
- March 2, 2017
- Submitted
- March 2, 2017
- Operation
- Air carrier
- Aircraft
- N409PH
- Make and model
- Bell 407
- Aircraft serial
- 53626
- Aircraft time
- 4,976 hours
- Engine
- Allsn 250C47B
- Engine time
- 24,784 hours
- System (JASC)
- 7250 · Turbine Section
- Part
- Bearing
- Part number
- M25010106
- Part serial
- NWF130108
- Condition
- Spalled
- Location
- Engine
- Part time
- 936 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.