As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS REMOVED FROM SERVICE TO FURTHER INVESTIGATE A PREVIOUS ISSUE OF A SUSPECTED NOSE LANDING GEAR DOORS NOT CLOSING. THE NOSE LANDING GEAR SOLENOID VALVE WAS REPLACED. DURING A CHECK FLIGHT, THE NOSE LANDING GEAR DOORS DID NOT CLOSE. MAINTENANCE REPLACED THE LANDING GEAR SELECTOR HANDLE, THE NOSE LANDING GEAR DOOR OVERRIDE SWITCH, THE NOSE LANDING GEAR DOOR PROXIMITY SWITCH, AND THE NOSE LANDING GEAR DOOR RELAY (K0642). OPERATIONAL CHECKS WERE GOOD WITH NO FURTHER DEFECTS NOTED. A TEST FLIGHT WAS PERFORMED AND WAS FOUND TO BE SATISFACTORY.