What was found
DUE TO T/M JOURNAL SUPPORT STUDS BACKING OUT OF COVER AN UNUSUAL WEAR PATTERN OF SPALLING AND GALLING OCCURRED ON GEAR TEETH.
- Difficulty date
- June 10, 2002
- Submitted
- June 17, 2002
- Operation
- Air carrier
- Aircraft
- N687AL
- Make and model
- Bell 407
- Aircraft serial
- 53366
- Aircraft time
- 3,933 hours
- Engine
- Allsn 250C47B
- System (JASC)
- 7210 · Turbine Engine Reduction Gear
- Part
- Gearshaft
- Part number
- 6893673
- Part serial
- NN146140
- Condition
- Galled
- Location
- Torque Meter
- Part time
- 4,782 hours
- Component
- Gearbox · 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.