As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKEOFF, ALL RED GEAR POSITION LIGHTS ILLUMINATED AND THE WARNING HORN SOUNDED WITH THE GEAR HANDLE UP. RECYCLED GEAR BUT LIGHT REMAINED ILLUMINATED UNITL PASSING 10,000 FEET. MAINTENANCE REPLACED THE MAIN LANDING GEAR PROXIMITY BOX.