As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LT MAIN GEAR DOOR CAUTION LIGHT STAYED ON WITH GEAR RETRACTION. VISUALLY CHECKED GEAR DOOR WAS OPEN. COMPLIED WITH TROUBLESHOOTING IAW MM SECTION 32-00-00. RIGGED UPLOCK PROXIMITY SENSOR IAW SECTION 32-30-26. OPS CHECK ON GROUND FOUND GOOD. OPS CHECK FLIGHT PERFORMED GEAR DOOR FLIGHT CHECKS GOOD.