As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MSO - FLIGHT 2382 - THE MAIN LANDING GEAR DOORS OPENED BRIEFLY DURING FLIGHT. THE LEFT DOOR AND RIGHT DOOR AMBER LIGHTS ILLUMINATED WITH ASSOCIATED AIR NOISE. THE DOORS WERE OPEN FOR 2 SECONDS. MAINTENANCE INSPECTED THE AIRCRAFT AND INTERROGATED THE PSEU. MAINTENANCE FOUND THE RIGGING NEAR GAP TOO FAR. THE PROXIMITY SENSOR WAS RE-RIGGED AND THE OPERATIONAL CHECKS WERE GOOD. THE AIRCRAFT WAS RETURNED TO SERVICE.