The Federal Aviation Administration has launched an investigation into whether U.S. airlines complied with an emergency order to cut flights at 40 major airports during the recent government shutdown.

The Federal Aviation Administration is rolling back some of its restrictions on commercial flights at 40 major U.S. airports that have been in place since Nov. 7.

The pilot of the business jet that flew over Washington and crashed in Virginia appeared to be slumped over and unresponsive, the fighter jet pilots reported, according to three US officials briefed on the matter.

"Emergency, emergency, emergency. Air Traffic Control: "Your job right now is just to keep focusing on that aircraft. But you're going to do an amazing job and we're going to help you get down to the ground." Flight school owner Chuck McElwee praised both student and air traffic control at a news conference held later. RELATED STORIESPlane Makes Emergency Landing on Busy RoadPilot's Wife Films His Incredible Emergency Landing in DesertPilot Kisses the Tarmac After Heart-Pounding Emergency Landing