As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOWERED GEAR AND RECEIVED AN UNSAFE RED LIGHT ON RT MAIN AND YELLOW GEAR DOOR LIGHT ON SAME. OTHER GEAR INDICATION WAS NORMAL. MISSED APPROACH AND WITHIN JUST A FEW MINUTES BOTH LIGHTS WENT OUT. RAISED GEAR NORMAL. LOWERED GEAR FOR NEXT APPROACH AND ALL WAS NORMAL. LANDING UNEVENTFUL. REPLACED THE NR 1 AND NR 2 MLG UPLOCK ASSYS. OPS AND LEAK CHECK GOOD. RETURNED TO SERVICE.