As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER GEAR WAS SELECTED DOWN, THE RIGHT MAIN INDICATION DID NOT LIGHT UP GREEN. THE ALTERNATE EXTENSION INDICATIONS ALL INDICATED GREEN AS NORMAL. THE FLIGHT LANDED SAFELY AND DID NOT DECLARE AN EMERGENCY BUT ISP TOWER SENT OUT EMERGENCY VEHICALS ANYWAY, INDICATING IT IS THEIR PROCEDURE TO TREAT THIS AS AN EMERGENCY.