The question of who dies first in a plane crash is a bit morbid and difficult to answer definitively. The outcome of a plane crash depends on numerous factors, including the cause of the crash, the location of the impact, the severity of the impact, and the individual's position in the aircraft.
However, if you're asking about the first person to die in a plane crash, the answer is Thomas Selfridge.
He was the first person to die in an airplane crash, which occurred on September 17, 1908, while flying as a passenger with Orville Wright.
While the question of who dies first in a plane crash is a difficult one to answer definitively, it's important to remember that every plane crash is unique and has different consequences.