New audio from the immediate aftermath from the New York City helicopter crash that killed five Spanish tourists on Thursday.

Speaking on National Geographic Channel's Air Crash Investigation series, Vitaly says of the killing: "This was not revenge. This was punishment. I wanted to hear them say we are responsible but ...

It was one of the most exhaustive airline crash investigations ever mounted ... was conducted in October 2003 at the offices of Air Safety Week, a widely respected airline safety newsletter ...

Investigators are focusing on a critical landing gear failure that caused a Delta Connection jet to crash-land at Toronto Pearson Airport.