As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF, WHEN GEARS WERE BEING RETRACTED THE CREW A HEARD LOUD NOISE IN NOSE GEAR AREA. THEY CYCLED NOSE GEAR AND NOISE CONTINUED. THEY RETURNED TO WITHOUT FURTHER INCIDENT. ON POST FLIGHT INSPECTION BOTH DOORS WERE CLOSED AND LATCHED. MAINTENANCE INSPECTED BOTH LEFT AND RIGHT NOSE GEAR DOORS FOR MECHANICAL DEFECTS, NONE NOTED IAW DACO 32-20-0. AIRCRAFT WAS RETURNED TO SERVICE.