What was found
ACFT HAD UNCOMMANDED YAW, CONTINUED AFTER PRESSING STABILIZATION CUT OFF PUSH BUTTON. LANDED AT NEARBY AIRPORT WITHOUT FURTHER INCIDENT. INSPECTED ALL T/R LINKAGE FROM NOSE TO TAIL, WITHOUT REMOVING MEDICAL FLOOR WITH NO DEFECTS FOUND. INSPECTED DRIVE SHAFTING FROM AFT OF MGB TO T/R GB, T/R & INTERMEDIATE GEARBOX FOR SECURITY & OIL, FUSELAGE AT TAIL BOOM AREA FOR CORROSION, METAL FATIGUE, CRACKS OR ANY OTHER IRREGULARITIES, NO DEFECTS FOUND. INSPECTED TAIL BOOM ATTACH POINT ALL BOLTS & NUTS SECURE. PERFORMED VISUAL INSPECTION OF YAW CSAS COMPONENTS, FOUND CONNECTOR AT YAW COMPUTER DIRTY. CLEANED CONNECTION, RE-INSTALLED CONNECTOR, PERFORMED GND RUNS WITH PILOT ACFT PERFORMED NORMALLY.