What was found
THE LIGHTS OF NOSE LANDING GEAR TURNED ON, AIRCRAFT RETURNED OF FLIGHT DUE TO DURING CLIMB, THE RED LIGHT OF NOSE LANDING GEAR TURNED ON, WITH THE LANDING GEAR LEVER IN UP POSITION. MAINTENANCE PERSONNEL PERFORMED REVISION, DETECTING THE NLG LOCK PIN WAS FOUND INSTALLED; SO NLG LOCK PIN WAS REMOVED IAW AMM, 32-30-00, ALL CORRECT. THE OVERWEIGHT INSPECTION WAS NOT NECESSARY DUE TO THE AIRCRAFT LANDED WITHIN THE MAXIMUM ALLOWABLE LANDING WEIGHT.