What was found
AIRCRAFT WAS GROUNDED: MODERATE AIRCRAFT VIBRATIONS DURING CLIMB ACCELERATING ABOVE 250KTS. YAWING MOTION.. FAST CYCLE. NOSE AND TAIL "WAGGING"ENG VIBES ALL BELOW 1.0. MAINTENANCE REPLACED L/H ELEVATOR SERVO CONTROL PER AMM 27-34-51.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIRCRAFT WAS GROUNDED: MODERATE AIRCRAFT VIBRATIONS DURING CLIMB ACCELERATING ABOVE 250KTS. YAWING MOTION.. FAST CYCLE. NOSE AND TAIL "WAGGING"ENG VIBES ALL BELOW 1.0. MAINTENANCE REPLACED L/H ELEVATOR SERVO CONTROL PER AMM 27-34-51.