What was found
CLIMBING THROUGH 35,000 FT YOKE JERKED ABRUPTLY, AUTOPILOT WAS DISCONNECTED AND AIRCRAFT NEED NOSE DOWN TRIM. FIFTEEN SECONDS LATER WITH AUTOPILOT OFF SECOND JERK OCCURRED IN YOKE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
CLIMBING THROUGH 35,000 FT YOKE JERKED ABRUPTLY, AUTOPILOT WAS DISCONNECTED AND AIRCRAFT NEED NOSE DOWN TRIM. FIFTEEN SECONDS LATER WITH AUTOPILOT OFF SECOND JERK OCCURRED IN YOKE.