As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DIVERSION TO JFK, AFTER T/O THE GEAR WAS RETRACTED RED GEAR LIGHT REMAINED ON APPROX 3 SECS LATER THE NOSE GEAR DOOR CAME OPEN AND THEN CLOSED. DOOR CYCLED 3 TIME WITH GEAR HANDLE IN THE UP POSITION. REMOVED AND REPLACED NOSE GEAR DOOR OPERATED SEQUENCE VALVE IAW MM 32-34-07. REMOVED AND REPLACED NOSE GEAR DOOR ACTUATOR IAW MM 32-34-14. DOOR CHECKED NORMAL IN PRIMARY AND ALTERNATE.