What was found
RDM- AFTER TOUCHDOWN, BOTH MAIN GEAR ON THE GROUND, NOSE IN THE AIR, RT AILERON APPLIED FOR CROSSWINDS, CONTROL COLUMN FROZE IN PLACE AND HAD TO BE OVERPOWERED. BOTH PITCH AND ROLL STUCK IN PLACE. AIRCRAFT ACCOMPLISHED AN UNEVENTFUL TAXI TO THE GATE. FIRST OPERATION CHECK FLIGHT FAILED. MAINTENANCE REPLACED BOTH FLIGHT GUIDANCE COMPUTERS, AND THE AFCS CONTROL PANEL. SECOND OPERATIONAL CHECK FLIGHT GOOD. AIRCRAFT RETURNED TO SERVICE. AFCS CONTROL PANEL S/N 90101208 (6778 TSR), NR 2 FLIGHT GUIDANCE COMPUTER S/N 96064529 (3317 TSR).