What was found
SEVERE VIBRATION DURING FLIGHT. WORN FEATHERING BEARINGS. REPLACED PARTS AND REPAIRED.
- Difficulty date
- June 26, 2002
- Submitted
- July 8, 2002
- Operation
- Air carrier
- Aircraft
- N8765J
- Make and model
- Bolkms BK117A1
- Aircraft serial
- 7054
- System (JASC)
- 6520 · Tail Rotor Gearbox
- Part
- Bearing
- Condition
- Worn
- Location
- T/R Gearbox
- Part time
- 3,963 hours
- Component
- Gearbox
- Component part number
- 4639003007
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- E
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.