LR25XR HAS RUDDER AND AILERON CTL RESTR AFTER TKOF. RETURN LAND AFTER BURNING OFF FUEL.

Narrative

AFTER PREFLT INSPECTION; ALL SYS WORKING; TAXI NORMAL. AT ROTATION IT WAS APPARENT I HAD NO AILERON CTL AND LITTLE RUDDER CTL. WE NOTIFIED DEP THAT WE WANTED TO RETURN TO THE ARPT. GIVEN VECTORS I COULD NOT HOLD HDG; AND DEP GAVE US DISCRETION ON OUR ALT. I ASKED TO MAINTAIN HDG TO BURN OFF FUEL AND GIVE ME TIME TO WORK ON THE PROB. AFTER ABOUT 30 MINS I WAS ABLE TO TURN THE PLANE BACK TOWARDS SAT; AND I REALIZED WE COULD NOT FIX OUR PROB FROM THE COCKPIT. ATC GAVE ME THE CHOICE OF LNDG AT SAT OR SKS; WE TOOK SKS BECAUSE OF WIND DIRECTION AND LENGTH OF THE RWY. AFTER A SAFE LNDG WE THINK WHAT MAY HAVE CAUSED OUR PROB WAS A LOCKING PIN USED DURING A 6 MONTH INSPECTION WAS LEFT IN PLACE UNDER THE FUSELAGE OF THE PLANE; AND MAY HAVE COME OUT UPON LNDG. AFTER AN INSPECTION OF THE PLANE; WITH ALL THE CTLS WORKING NORMALLY; WE FLEW THE AIRPLANE BACK TO SAT WITHOUT ANY PROBS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATES HE TRULY BELIEVES THE PROB WAS A LOCKING PIN THAT WAS NOT REMOVED PRIOR TO DEP. THE MECHS STATED THAT THEY HAD TROUBLE KEEPING THE PIN IN PLACE WHILE WORKING ON THE ACFT AND REMOVED THE FLAG. WITHOUT THE FLAG THE PIN WOULD BE VERY HARD TO SEE DURING THE WALKAROUND. SINCE THE AILERON MOVEMENT WAS OK DURING TAXI EVERYTHING SEEMED NORMAL. THE PIN WAS NEVER FOUND AND THE MECHS CLAIM THAT ALL PINS ARE ACCOUNTED FOR. THERE IS NO DAMAGE TO THE ACFT OR SCARRING ON THE CABLES AS THERE WOULD BE IF A PART WOULD HAVE MOVED IN OR OUT OF PLACE DURING THE FLT. THE ACFT HAS BEEN FLOWN ABOUT 6 TIMES SINCE THE INCIDENT AND THE PROB CANNOT BE DUPLICATED. THE LR25XR IS DESIGNED SO THAT AILERON MOVEMENT WILL ALLOW THE PIN TO FALL OUT AND RPTR BELIEVES THIS HAPPENED ON LNDG. THE DESIGN WORKS WELL.