What was found
DFW - FLT 1850 - AFTER TAKEOFF DFW, UPON GEAR RETRACTION A LOUD NOISE AND VIBRATION WAS FELT FROM NOSE GEAR. AIRCRAFT AIR INTERRUPTED AND RETURNED DFW WITHOUT FURTHER INCIDENT. MAINTENANCE FOUND RIGHT NOSE GEAR DOOR SNUBBER FAILED TO LOCK DOOR IN PLACE. MAINTENANCE INSTALLED NEW DOOR SNUBBER. ACCOMPLISHED REQUIRED CHECKS AND SWUNG NOSE GEAR WITH NO FAULTS NOTED. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)