As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKEOFF FROM KTOL TO KLAX ON GEAR RETRACTION HANDLE UP DOOR UNLATCHED LIGHT STAYS ILLUMINATED. UP LATCH CHECK LIGHT STAYED ILLUMINATED AND REMAINED ILLUMINATED WITH HANDLE UP. INSPECTION IS ON GOING AND AS MORE INFORMATION BECOMES AVAILABLE IT WILL BE PROVIDED. MAINTENANCE REMOVED AND REPLACED MULTIPLE PARTS. OPERATIONAL CHECK GOOD IN ACCORDANCE WITH THE DOUGLAS AIRCRAFT MAINTENANCE MANUEL. AIRCRAFT RETURNED TO SERVICE.