What was found
ENGINE REMOVED 5-15-16 DUE TO TURBINE O/H. METAL FOUND ON GEARBOX CHIP PLUGS AT TIME OF DISASSEMBLY. REASON FOUND TO BE TURBINE NR 5 BEARING SPALLING AT OUTER RACE SPLIT AND BEARING BALLS. INSTALLED NEW NR 5 BEARING.
- Difficulty date
- May 26, 2016
- Submitted
- May 26, 2016
- Operation
- General aviation
- Filed by
- HEER617E
PHI Aviation, LLC - Aircraft
- N408PH
- Make and model
- Bell 407
- Aircraft serial
- 53228
- Aircraft time
- 16,191 hours
- Engine
- Allsn 250C47B
- Engine time
- 9,485 hours
- System (JASC)
- 7250 · Turbine Section
- Part
- Bearing
- Part number
- M25010106
- Part serial
- NWD141451
- Condition
- Spalled
- Location
- Turbine
- Part time
- 1,087 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.