What was found
JFK/MIA - FLT 23 - 17:45 AFTER TAKEOFF THE LANDING GEAR WOULD NOT RETRACT IN EITHER NR 1 OR NR 2 SYSTEMS. RETURNED TO JFK, NO FUEL DUMPED AND NORMAL LANDING, NO EMERGENCY DECLARED. UPON INSPECTION OF THE NOSE GEAR, FOUND GROUND MANUAL RELEASE HANDLE TO BE INT HE MID-RELEASE CONDITION. RE-SECURED HANDLE. PERFORMED SYSTEM OPERTIONAL CHECK IAW 32-20-00, FOUND TO FUNCTION NORMAL. AIRCRAFT RETURNED TO SERVICE. (X)