- Difficulty date
- August 13, 2018
- Submitted
- August 14, 2018
- Operation
- Air carrier
- Aircraft
- N473PH
- Make and model
- Bell 407
- Aircraft serial
- 54648
- Aircraft time
- 384 hours
- Engine
- Allsn 250C47B
- Engine time
- 384 hours
- Part
- Retaining Ring
- Part number
- 6748072283
- Condition
- Broken
- Location
- Nr 2 Bearing
- Part time
- 384 hours
- Component
- Compressor
- Component part number
- M25010559
- 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 REMOVED DUE TO METAL IN THE OIL. THE NR 2 BEARING RETAINING RING WAS BROKEN WITH A PIECE MISSING.
More about the Bell 407