What was found
SUSPECT NOSE GEAR LANDING DOOR DID NOT CLOSE ON TAKEOFF, LOUD RUMBLING SOUND AND HEAVY VIBRATION IN NOISE GEAR AREA. PERFORMED FUEL DUMP ABNORMAL PROCEDURE FOR LANDING. FOUND RIGHT GEAR DOOR DOWN, PERFORMED INSPECTION, UNLOCK PIN STICKING, CLEANED AND LUBED OPS CHECKS OK IAW MM 32-22-01.