What was found
RIC-FLT 3000 CREW REPORTED THE NOSE LANDING GEAR WOULD NOT RETRACT AFTER TAKEOFF. THE CREW RETURNED TO RIC WITHOUT FURTHER INCIDENT. MAINTENANCE FOUND BOTH NOSE LANDING GEAR UPLOCK AND DOWNLOCK PROXIMITY SWITCH HARNESS CANNON PLUGS NOT PROPERLY SECURED. MAINTENANCE RESECURED BOTH CANNON PLUGS AND PERFORMED A SATISFACTORY SYSTEM OPERATIONAL TEST. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.