As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING GEAR EXTENSION GEAR INDICATION WAS THREE RED WITH A FLASHING HANDLE. GEAR HANDLE WAS CYCLED WITH NO CHANGE TO GEAR INDICATION. PUTTING GEAR HANDLE IN DOWN POSITION RESULTED IN A NORMAL GEAR INDICATION. ALL SYSTEMS APPEAR NORMAL. REPLACED LT MAIN GEAR DOOR ACTUATOR PROXIMITY SWITCH WITH A NEW UNIT IAW F2000 MM 32-600. OPS + LEAK CHECK GOOD.