What was found
TURBINE REMOVED TO INSPECT FOR METAL IN OIL. ON INSPECTION OF NR 5 BEARING, FOUND SPALLING AT OUTER RACE SPLIT. SCRAP PART AND REPLACE WITH NEW.
- Difficulty date
- April 29, 2012
- Submitted
- May 4, 2012
- Operation
- Air carrier
- Aircraft
- N496PH
- Make and model
- Bell 407
- Aircraft serial
- 53398
- Aircraft time
- 11,165 hours
- Engine
- Allsn 250C47B
- Engine time
- 3,267 hours
- System (JASC)
- 7250 · Turbine Section
- Part
- Bearing
- Part number
- M25010106
- Part serial
- NWL110609
- Condition
- Spalled
- Location
- Nr 5
- Part time
- 384 hours, 384 cycles
- Component
- Turbine · Allsn
- 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.