What was found
AFTER TAKEOFF, LANDING GEAR DOOR OPEN WAS INDICATED. CREW RETURNED AIRCRAFT TO DEPARTURE AIRPORT. GROUND MAINTENANCE REPLACED GEAR DOOR PROXIMITY SWITCH.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AFTER TAKEOFF, LANDING GEAR DOOR OPEN WAS INDICATED. CREW RETURNED AIRCRAFT TO DEPARTURE AIRPORT. GROUND MAINTENANCE REPLACED GEAR DOOR PROXIMITY SWITCH.