What was found
DUE TO IMPROPER MESHING OF GEARS, PINION GEAR HAD EXCESSIVE SPALLING ON GEAR TEETH. REMOVED AND REPLACED.
- Difficulty date
- April 1, 2003
- Submitted
- April 7, 2003
- Operation
- General aviation
- Aircraft
- N527AL
- Make and model
- Bell 407
- Aircraft serial
- 53211
- Aircraft time
- 5,721 hours
- Engine
- Allsn 250C47B
- Engine time
- 4,875 hours
- System (JASC)
- 6320 · Main Rotor Gearbox
- Part
- Pinion Gear
- Part number
- E6893672
- Part serial
- DG13093
- Condition
- Spalled
- Location
- Gearbox
- Part time
- 621 hours
- Component
- Gearbox
- Component part number
- 23063393
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.