- Difficulty date
- August 19, 2016
- Submitted
- August 19, 2016
- Operation
- Air carrier
- Aircraft
- N4999
- Make and model
- Bell 407
- Aircraft serial
- 53323
- Aircraft time
- 8,451 hours
- Engine
- Allsn 250C47B
- Engine time
- 6,768 hours
- Part
- Bearing
- Part number
- M25010106
- Part serial
- NWH140039
- Condition
- Spalled
- Location
- Nr 5
- Part time
- 9,705 hours
- 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.
What was found
ENGINE NR 5 BEARING REMOVED AND REPLACED DUE TO SPALLING ON OUTER RACE.
More about the Bell 407