What was found
UPON DISASSEMBLY OF GEARBOX. UPON DISASSEMBLY OF GEARBOX FOUND EXCESSIVE GALLING AND SPALLING AND WEAR IN GEAR TEETH AND UNEVEN WEAR AND HEAVY SPALLING OF T/M GEAR TEETH. ASSURE PROPER MESHING OF GEAR TEETH.
- Difficulty date
- May 2, 2002
- Submitted
- July 2, 2002
- Operation
- Air carrier
- Aircraft
- N403AL
- Make and model
- Bell 407
- Aircraft serial
- 53478
- Engine
- Allsn 250C47B
- System (JASC)
- 7210 · Turbine Engine Reduction Gear
- Part
- Pinion Gear
- Part number
- 6893672
- Part serial
- NN78424
- Condition
- Worn
- Location
- Gearbox
- Part time
- 752 hours
- 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.