What was found
THE ENGINE WAS REMOVED. METAL NOTED ON CHIP PLUGS. DISASSEMBLED THE GEARBOX AND FOUND THE PICKUP ON 3 & 4 BEARING SEPERATORS. REPLACED THE 3 & 4 ROLLER BEARINGS.
- Difficulty date
- June 4, 2018
- Submitted
- June 6, 2018
- Operation
- Air carrier
- Aircraft
- N434PH
- Make and model
- Bell 407
- Aircraft serial
- 53773
- Aircraft time
- 3,103 hours
- Engine
- Allsn 250C47B
- Engine time
- 8,445 hours
- System (JASC)
- 7210 · Turbine Engine Reduction Gear
- Part
- Bearing
- Part number
- M25010399
- Condition
- Failed
- Location
- Gearbox
- Part time
- 644 hours
- Component
- Gearbox
- Component part number
- 23063393
- 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.