As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GEAR DOOR OPEN LIGHT REMAINED ON AFTER GEAR WAS EXTENDED ON APPROACH. ACCOMPLISHED EMERGENCY GEAR EXTENSION PROCEDURES AND AIRCRAFT LANDED WITHOUT INCIDENT. FOUND LEFT GEAR DOOR SWITCH ARM BROKEN. REPLACED SWITCH, OPERATIONAL CHECK OK. AIRCRAFT RETURNED TO SERVICE.