What was found
ENGINE WAS REMOVED DUE TO N2 LOCKUP. NR 5 BEARING REVEALED SPALLING IN SEAM OF OUTER RACE. REPLACED NR 5 BEARING.
- Difficulty date
- August 28, 2011
- Submitted
- September 26, 2011
- Operation
- Air carrier
- Aircraft
- N741PH
- Make and model
- Bell 407
- Aircraft serial
- 53457
- Aircraft time
- 8,430 hours
- Engine
- Allsn 250C47B
- Engine time
- 4,121 hours
- System (JASC)
- 7250 · Turbine Section
- Part
- Bearing
- Part number
- 6871505
- Part serial
- MP088499
- Condition
- Spalled
- Location
- Nr 5
- Part time
- 1,404 hours
- 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.