What was found
RT INBD TIRE SEPARATED ON TAKEOFF ROLL. DURING CLIMBOUT, RT LANDING GEAR WOULD NOT RETRACT. DECLARED EMERGENCY, RETURNED TO FIELD. LANDED WITHOUT INCIDENT. R & R NR 4 WHEEL SPEED TRANSDUCER, RT INBD AND RT OTBD TIRES, RT INBD BRAKE, DOWNLOCK SENSOR HARNESS, DOWNLOCK SIDE STAY, DOWNLOCK ACTUATOR, DOWNLOCK SPRING AXLE. PERFORMED FREE FALL INSPECTION AND GEAR SWINGS.