As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WITH LANDING GEAR HANDLE IN DOWN POSITION ALL THREE GREEN LANDING GEAR LIGHTS CAME ON AND DOOR RED LIGHT STAYED ON AND LANDING GEAR UNSAFE LIGHT STAYED ON. ALSO, WITH FLAPS AT 35 POSITION UNSAFE WARNING HORN CAME ON. REMOVED AND REPLACED LT DOOR PROXIMITY SWITCH IAW MM 32-60-07, OPS CHECK ON THE GROUND NORMAL IAW MM 32-60-07. AIRCRAFT RETURNED TO SERVICE.