An urgent ground stop was issued at JFK Airport on October 30, 2025, following an emergency reported on an inbound Frontier Airlines flight from Puerto Rico. The flight, Frontier Flight 3546 from Luis Muñoz Marín International Airport, signaled a code 7700, indicating a general emergency, likely due to mechanical issues. The plane landed safely at JFK around 12:50 p.m., with no injuries reported. The emergency prompted the FAA to halt all outbound flights and hold inbound flights at their origin until 1:45 p.m., causing significant delays and backups. The airline stated that passengers would be accommodated on alternate flights while the aircraft undergoes evaluation. The emergency occurred amid already challenging weather conditions, including high winds and low clouds, which have caused delays exceeding four hours at JFK. The FAA announced that the ground delay would continue until midnight due to weather conditions. This incident follows a recent staffing-related ground stop at Newark Liberty International Airport, amid ongoing concerns about air traffic control and staffing issues in the region.