What was found
GEAR COULD NOT GET A CONTACT PATTERN WITHIN ACCEPTABLE LIMITS WHEN MATCHED TO BEVEL. GEAR SHAFT P/N 4639311042, S/N 978. REMOVED AND REPLACED.
- Difficulty date
- January 6, 1998
- Submitted
- March 26, 2000
- Operation
- General aviation
- Make and model
- Bolkms BK117C1
- System (JASC)
- 6520 · Tail Rotor Gearbox
- Part
- Bevel Gear Shaft
- Part number
- 4639311043
- Condition
- Defective
- Location
- T/R Gearbox
- Stage of operation
- IN
- Nature of condition
- W
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.