What was found
IN-FLIGHT FLAP CONTROL MALFUNCTION. FLAP MOTOR CB POPPED WHEN "FULL" FLAPS SELECTED IN-FLIGHT ALSO AFTER LANDING WHEN FLAPS SELECTED "UP". TROUBLESHOOTING FOUND CRACKS IN THE WING FLAP MOTOR/ACTUATOR SUPPORT ASSY AFT VERTICAL BRACKET AND FORE/AFT BRACKET. THE VERTICAL SUPPORT HAS ONE SMALL CRACK AND THE FORE/AFT SUPPORT IS CRACKED FROM THE LIGHTNING HOLE TO ITS EDGE. SB CAB 05-4 REPLACES THE SUPPORT ASSY DUE TO CRACKING. REMOVED AND REPLACED THE FLAP MOTOR/ACTUATOR SUPPORT ASSY WITH SB CAS05-4 INSTRUCTED PN.