As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LANDING GEAR UNSAFE LIGHT ILLUMINATED WHEN LANDING GEAR RETRACTED DURING CLIMBOUT. INDICATION CONFIRMED THAT THE RIGHT MAIN LANDING GEAR DOOR WAS NOT LATCHED. RECYCLED LANDING GEAR TWICE WITHOUT CHANGE. CHECKED WIRING FROM RIGHT PROXIMITY SWITCH TO PROXIMITY BOX AND WIRING CHECKED GOOD. COMPLETED MAB DC832-6 AND INDICATIONS CHECKED GOOD.