As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND CONDENSATION DRAIN HOLE PLUGGED RESULTING IN WATER ACCUMULATION IN CONTROL COLUMN (ABOUT ONE-FOURTH CUP OF WATER RELEASED WHEN DRAIN HOLE UNPLUGGED). THIS PROBLEM HAS CAUSED ONE IN-FLIGHT FAILURE RESULTING IN SEVERELY DAMAGED AIRCRAFT. THE ALUMINUM PLUG IN THE BOTTOM OF CONTROL COLUMN MUST BE REMOVED TO TREAT AND INSPECT THIS AREA.