What was found
ON 2 MILE FINAL, DISCONNECTED THE A/P AND IT DISENGAGED. HAD ROLL CONTROL, BUT PITCH CONTROL WAS STUCK. PRESSED AP DISCONNECT AGAIN, PITCH CONTROL REMAINED STUCK. PUSHED/PULLED ON CONTROL YOKE AND PITCH CONTROL POPPED FREE. STAB CHANNEL 1 INOP MESSAGE APPEARED. AFTER POPPING FREE, PITCH CONTROL FELT NORMAL. NO BINDING OR HEAVY FEELINGS NOTED. LANDED NORMALLY. DID NOT USE PITCH DISCONNECT. ***AIRCRAFT REMOVED FROM SERVICE*** R&R ELEVATOR SERVO IAW AMM 22-11. OPS CHECKS GOOD AT THIS TIME.