As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER GEAR WAS RETRACTED AFTER T/O, THE NOT LATCHED LIGHT STAYED ON. GEAR HANDLE SELECTED TO UPLATCH CHECK POSITION GEAR STAYED UP AND NOT LATCHED LIGHTS STAYED ON. CHECKED LANDING GEAR DOOR AND GEAR LATCHING SELECTOR AND RIGHT GEAR DOOR NOT LATCHED LIGHT CAME ON. CYCLED GEAR BUT NOT LATCHED LIGHT STAYED ON. STILL OPEN.