As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB FROM KTOL TO KMCO THE CREW RAISED GEAR DOOR AND THE NOT LATCHED LIGHT STAYED ILLUMINATED. GEAR WAS RECYCLED, LEFT LIGHT WENT OUT AND RIGHT LIGHT STAYED ON. MAINTENANCE REMOVED RIGHT MAIN LANDING GEAR DOOR PROXIMITY SWITCH AND BRACKET. FABRICATED AND INSTALLED DOUBLER AND FILLER FOR PROXIMITY SWITCH. THEN SWAPPED PROXIMITY BOXES, REINSTALLED AND OPERATIONALLY CHECKED PROXIMITY SWITCH IN ACCORDANCE WITH DOUGLAS AIRCRAFT MAINTENANCE MANUEL. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.