As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NOSE LANDING GEAR WOULD NOT EXTEND ON LANDING INTO IAD. CREW RECYCLED GEAR AND NOSE GEAR EXTENDED NORMALLY WITH PROPER INDICATIONS. AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND NOSE GEAR OVERCENTER LINKAGE AND LEFT DOOR OUT OF RIG. ADJUSTED LINKAGE AND DOOR, OPERATIONAL CHECK NORMAL ON TEST FLIGHT.