What was found
PILOT REPORTS VERTICAL VIBRATION AND RETURNED TO BASE. INSPECTION REVEALED 'BLUE' M/R SPHERICAL STOP BEARING, P/N 204A33-633 156, FAILED. REPLACED ALL THREE M/R SPHERICAL STOPS WITH P/N 704A33633-109. RUN-UP OPS CHECK GOOD.
- Difficulty date
- September 5, 1997
- Submitted
- March 26, 2000
- Operation
- General aviation
- Aircraft
- N4AK
- Make and model
- Snias AS350B
- Aircraft serial
- 2544
- System (JASC)
- 6220 · Main Rotor Head
- Part
- Stop Bearing
- Part number
- 704A33633156
- Condition
- Failed
- Location
- Blue Blade
- Part time
- 2,193 hours
- Stage of operation
- NR
- Nature of condition
- E
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.