What was found
MIA - FLT 9038 - DURING GEAR RETRACTION, GOT DOOR NOT LATCHED LIGHT. FOLLOWED DOOR NOT LATCHED LIGHT CHECKLIST. DID NOT SOLVE PROBLEM. RETURNED TO MIAMI. RERACKED PROXIMITY CARD J-12 AND J-13. INDICATION OF GEAR DOOR WARNING. OPS CHECKED NORMAL IAW 32-10-00. ACCOMPLISHED GEAR SWING. OPS CHECK NORMAL, VARIOUS TIMES IAW 32-20-0. (X)