As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT MAIN LANDING GEAR ILLUMINATED RED AFTER TAKE-OFF. RECYCLED THE GEAR AND INDICATION WENT BACK TO NORMAL. PERFORMED VISUAL INSPECTION, CLEANED RIGHT MAIN LANDING GEAR SENSOR & TESTED PROXIMITY SWITCH ELECTRONIC UNIT TESTED GOOD IAW MD-80 AMM 32-60-04.