As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INBOUND ON FINAL, CREW REPORTED NOSE GEAR DOOR WENT UNSAFE. CREW PERFORMED A GO-AROUND AND RECYCLED LANDING GEAR IAW QRH. LANDING GEAR INDICATED DOWN. CREW LANDED WITHOUT INCIDENT. MAINTENANCE PERFORMED CHECKS OF LANDING GEAR EXTENSION SYS IAW AMM. OPS CHECK GOOD. ACFT RELEASED FOR SERVICE.