GO AROUND DUE TO ROLL ACTION ON APCH.

Narrative

WHILE ON FINAL APCH TO RWY 35L; AT APPROX 200' AGL; THE AIRPLANE ROLLED TO THE LEFT. I ROLLED BACK RIGHT TO WINGS LEVEL AND SIMULTANEOUSLY EXECUTED AN IMMEDIATE GO AROUND. ON CLBOUT; I NOTICED THE 'AUG-AIL' (AUGMENTATION AILERON) WARNING LIGHT HAD ILLUMINATED ON THE ANNUNCIATOR PANEL. ON THE XWIND LEG; WE ATTEMPTED TO RESET THE SYS WITH SPOILER ON RESET SWITCH. THIS WOULD HAVE RETURNED THE SYS TO NORMAL OPERATION. BEING UNABLE TO RESET; WE PULLED THE SPOILERON CB; THUS DISABLING THE SPOILERON SYS. THE NEXT LNDG WAS COMPLETED W/O ANY FURTHER PROBS. AFTER THE LNDG WE TURNED THE AIRPLANE OVER TO OUR MAINT. A SPOILERON BEFORE TAXI CHK WAS CONDUCTED AS PER THE FLT AND MAINT MANUALS. THE SYS GND-CHKED SATISFACTORILY; BUT ON FURTHER INVESTIGATION A SPOILER FOLLOWUP AND THE COMPUTER AMPLIFIER DID NOT CHK OUT ELECTRONICALLY. THESE PARTS WERE REPLACED AND THE SYS RECALIBRATED AND FUNCTIONALLY TESTED. THE FLT MANUAL AND THE PLT TRNING MANUAL DOES NOT SEEM TO PROVIDE NEEDED INFO ON THE FOLLOWING AREAS: SATISFACTORY COMPLETION OF THE BEFORE TAXI CHK DID NOT GUARANTEE ELECTRICAL INTEGRITY OF THE SYS. PROCS TO COMPENSATE FOR THE LOSS OF ROLL CONTROL AUTHORITY DUE TO DISABLING THE SYS.