What was found
RIGHT FLAP FLEX CABLES FAILED WHEN FLAPS SELECTED TO 60, SPLIT FLAP CONDITION OCCURRED, LT FLAPS WENT TO FULL EXTENSION, RT OTBD WENT TO APPROX 30, RT INBD STAYED IN FULL UP POSITION. CABLES FAILED AT DRIVE ENDS AT TRANSMISSION, SWAGES FAILED, AND ENDS WERE FOUND LOOSE WHEN PLACED IN A VICE AND CABLES TWISTED WITH VICE GRIPS. AS A RESULT OF RT INBD STAYING UP, FLAPS WOULD NOT RETRACT WHEN SELECTED UP. FLAP MOTOR BURNED OUT AND CIRCUIT BREAKER TRIPPED. A SUCCESSFUL LANDING MADE USING AILERONS AND DIFFERENTIAL POWER.