On December 30, 2024, Hawaiian Airlines Flight HA21, en route from Seattle to Honolulu, made an emergency U-turn shortly after takeoff due to smoke in the cockpit. The flight, which departed at 8:41 PM UTC, returned safely to Seattle-Tacoma International Airport by 9:00 PM UTC and was subsequently canceled. This incident, involving an 11.6-year-old Airbus A330, has prompted an FAA investigation to determine the smoke’s cause. It reflects a troubling trend of cockpit smoke emergencies in aviation, with recent incidents involving other airlines highlighting ongoing safety concerns. Passengers and crew were praised for their swift response.