As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN)WHILE CARRYING OUT FLIGHT TEST AFTER AN INSPECTION THE RIGHT HAND GEAR LIGHT FAILED TO ILLUMINATE. PILOT TAPPED THE SOCKET AND THE LIGHT CAME ON. ALL THREE POSITION LIGHT SOCKETS WERE FOUND TO BE LOOSE AND THEREFORE NEW PARTS WERE ORD ERED FOR THE AIRCRAFT.