As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON GEAR RETRACTION, RT MAIN GEAR WOULD NOT RETRACT. UNSAFE LIGHT AND GEAR DOOR LIGHTS BOTH ILLUMINATED. PERFORMED LANDING GEAR UNSAFE INDICATION ABNORMAL PROCEDURE. LOWERED GEAR. GOT ALL 3 GREEN. CONTACTED MAINT AND FLIGHT CONTROL. RETURNED TO JFK.