As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WITH CAPTAIN FLYING PILOT , AUTOPILOT OFF DESCENDING THRU 1500 FT EXPERIENCED BINDING OF ELEVATOR DOWN PITCH. FREED MOVEMENT BY EXTENDING TRAVEL FARTHER FORCING YOKE FWD. BINDING CLEARED WITH A POP SOUND FROM THE FIRST OFFICERS SIDE YOKE AREA. ACFT WAS NOT DE-ICED BEFORE THE FLIGHT & WAS IN THE HANGAR ALL NIGHT PREVIOUSLY.