What was found
FLT 6161 - LGA-BOS - OUTBOARD FLAPS STUCK BETWEEN 2 DEGREES AND 5 DEGREES ON RETRACTION. THEN THE OUTBOARD FLAPS WOULD NOT EXTEND BEYOND FLAPS 15 DEGREE POSITION. EMERGENCY DECLARED. AIR RETURNED TO LGA. FOUND INBOARD TORQUE TUBE DISCONNECTED ON THE RIGHT OUTBOARD FLAP. RECONNECTED SAME AND REPLACED COUPLING SCREWS AND RIGGED FLAPS PER MM 27-51-0. OPERATIONAL CHECKS OK. (M)