What was found
FLIGHT 5436 - AFTER DEPARTURE FROM LGA RECEIVED A GEAR UP DISAGREE MESSAGE, NOSE GEAR REMAINED DOWN. CREW DECLARED AN EMERGENCY AND FLIGHT LANDED AT LGA WITHOUT INCIDENT. REPLACED THE NLG SELECTOR VALVE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
FLIGHT 5436 - AFTER DEPARTURE FROM LGA RECEIVED A GEAR UP DISAGREE MESSAGE, NOSE GEAR REMAINED DOWN. CREW DECLARED AN EMERGENCY AND FLIGHT LANDED AT LGA WITHOUT INCIDENT. REPLACED THE NLG SELECTOR VALVE.