India, Feb. 1 -- Shocking audio from an air traffic control tower at Northeast Philadelphia Airport has revealed the horrifying final moments before a small medevac jet carrying six people crashed into a Philadelphia neighborhood on Friday, January 31. The audio was recorded moments before the plane took off, and has been obtained by Fox News Digital.

In the audio, operators can be heard speaking as they frantically attempted to get in touch with the Learjet 55 before it crashed. "What's going on down there?" an air traffic controller can be heard saying.

"We have a lost aircraft. We're not exactly sure what happened. So, we're trying to figure it out," replies another air traffic controller. "The field is going to be closed so no inbou...