What was found
ON DISSASSEMBLY FOUND 30 BOLTS ON GEAR SHAFT WERE LOOSE, MATING SURFACE FRETTED BEYOUND LIMITS IN CR&O MANUAL. THIS WAS THE FIRST TIME UNIT WAS DISSASSEMBLED SINCE NEW. REMOVED AND REPLACED BEVEL GEAR.
- Difficulty date
- January 20, 2003
- Submitted
- January 27, 2003
- Operation
- Air carrier
- Aircraft
- N697AL
- Make and model
- Bell 407
- Aircraft serial
- 53374
- Aircraft time
- 2,457 hours
- System (JASC)
- 6320 · Main Rotor Gearbox
- Part
- Bevel Gear
- Part number
- 407040035101
- Part serial
- A621
- Condition
- Scored
- Location
- Transmission
- Part time
- 2,457 hours
- Component
- Transmission · Bell
- Component part number
- 407040006107
- Stage of operation
- IN
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.