美国一架飞机坠河，机上三人全部遇难！

Group 1 - A small plane crashed into the Platte River in Nebraska, resulting in three fatalities [1] - The incident occurred on April 18 at 8:15 PM, with all three individuals on board confirmed dead [1] - The cause of the crash is currently unknown, and investigations are being conducted by the Federal Aviation Administration and the National Transportation Safety Board [1] Group 2 - Just nine days prior, another aviation accident occurred when a sightseeing helicopter crashed into the Hudson River near Manhattan, New York [4] - The helicopter crash resulted in the deaths of a pilot and a family from Spain, including Siemens Transportation Group executives and their three children [4] - The helicopter had taken off from a helipad in downtown New York and crashed within 18 minutes of flight [4] Group 3 - Eyewitness accounts and social media videos indicated that the helicopter's tail rotor and blades detached mid-air, leading to the crash [5] - Former President Trump commented on the incident, describing the crash footage as "chilling" and noted that the Transportation Secretary was on-site [5]