What was found
AFTER TAKEOFF LANDING GEAR UNSAFE LIGHTS ILLUMINATED WITH LANDING GEAR IN THE UP POSITION. REPLACED LANDING GEAR UPLOCK SWITCH. OPERATIONAL CHECK NORMAL.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AFTER TAKEOFF LANDING GEAR UNSAFE LIGHTS ILLUMINATED WITH LANDING GEAR IN THE UP POSITION. REPLACED LANDING GEAR UPLOCK SWITCH. OPERATIONAL CHECK NORMAL.