As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IR/ UPON EXTENSION OF GEAR AND 3 GREEN INDICATIONS. SEVERAL SECONDS LATER HEARD A THUMP NOISE. INSPECTED GEAR THROUGH NOSE GEAR PORT AND CONFIRMED GEAR DOWN. EMERGENCY DECLARED MCO. FOUND LEFT NOSE TIRE FLAT. REPLACED BOTH NOSE WHEEL ASSYS PER MM.