As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF JFK RIGHT MAIN GEAR REMAINED EXTENDED WITH RT GEAR DOWN GREEN LIGHT ILLUMINATED. RIGHT GEAR RETRACTED AFTER 11 MINUTES. JFK TOWER CONFIRMED VISUALLY RT GEAR EXTENDED WITH OTHER GEARS RETRACTED. CTR HYD PRESS NORMAL. HAD EICAS MSG''S GEAR DISAGREE AND GEAR DOORS WITH ASSOCIATED LIGHTS ILLUMINATE.