As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
JFK - FLT 2689 - ON APPROACH LGA, WHEN FLAPS WERE SET TO 5, FLAPS FROZE IN THE 1 POSITION. FLIGHT DIVERTED TO JFK WHERE LANDING WAS MADE WITHOUT FURTHER INCIDENT. MAINTENANCE FOUND INDICATOR SPLIT CAUSING FLAP SYSTEM TO BE LOCKED OUT. REPLACED INDICATOR. SYSTEMS OPS NORMAL. (Z)