What was found
PINION GEAR HAS EXCESSIVE GALLING ON GEAR TEETH, POSSIBLY DUE TO EXCESSIVE TORQUE ON ENGINE, GEAR CANNOT SUSTAIN LOAD. (X)
- Difficulty date
- February 18, 2000
- Submitted
- August 4, 2000
- Operation
- General aviation
- Aircraft
- N477AL
- Make and model
- Bell 407
- Aircraft serial
- 53203
- Engine
- Allsn 250C47B
- System (JASC)
- 7210 · Turbine Engine Reduction Gear
- Part
- Pinion Gear
- Part number
- 6893672
- Part serial
- NN76900
- Condition
- Galled
- Location
- Gearbox
- Part time
- 1,985 hours
- Component
- Gearbox · CAG47276
- 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.