What was found
MIA - FLT 214 - WHILE CLIMBING THROUGH 29,000 FEET AT MACH .74. AIRCRAFT YAWED LEFT THEN RIGHT DUTCH ROLL. AUTO THROTTLE AND AUTO PILOT TRIPPED OFF. MANUALLY FLY REQUIRED IMMEDIATE INPUT OF 3 TO 4 DEGREE LEFT RUDDER TRIM WAS REQUIRED. ALTITUDE SET WINDOW BLANK, ACCOMPLISHED CHECKLIST, FOUND DIGITAL FLIGHT GUIDANCE C-17 CIRCUIT BREAKER POPPED. RESET CIRCUIT BREAKER, NO CHANGE. LANDED MIA WITHOUT FURTHER INCIDENT. PERFORMED FLIGHT FAULT REVIEW, TROUBLE SHOT TO DFW CONTROL PANEL. REPLACED DFG CONTROL PANEL SYSTEM GROUND CHECKED NORMAL OPERATION. (M)