While the 737 was flying, a important part of it (wing, estabilizer or tail) crashed and got off the fuselage, this would surely result in a crash of the plane, verticaly, as the Brazilian Authorities are saying. This part (VERY coincidentally) hit the Legacy, that was flying near there. As the Legacy is much smaller than the Boeing, and i the case of a collision, it would had surely been much more wracked than the Boeing. A collision to a stabilizer for example would make more possible the version of the Legacy that, said the pilot "Hit something that he don't know what is".
This version is much more possible because today, a midair collision, between two modern planes is very unprobable. People in ground near the local of the crash, said that saw the plane going down fast and with any control, something that would happen if it lost any wing, estabilizer or tail.
RIO DE JANEIRO, Brazil - Prosecutors could charge two American pilots of an executive jet with manslaughter following the high-altitude collision with a Brazilian jetliner that apparently led to a crash that killed all 155 people aboard, federal police said Wednesday.
Police seized the passports of pilots Joseph Lepore and Jan Paladino, both from New York State. The two were not arrested, but cannot leave the country.
Lepore and Paladino were piloting the Brazilian-made Embraer Legacy 600 when it collided with a brand-new Boeing 737-800 above the Amazon rain forest near Peixoto de Azevedo in Mato Grosso state, some 1,100 miles northwest of Rio de Janeiro.
Gol airlines Flight 1907 crashed, killing all 155 aboard. The Legacy was damaged, but landed safely at an air force base.
Mato Grosso's acting federal police director, Geraldo Pereira, said the Federal Prosecutor's Office had ordered an investigation into "the possible commission of a crime."
"We will start investigating if the two pilots caused the accident and if they are considered guilty, they could be charged with involuntary manslaughter," Pereira said.