What does the National Transportation Safety Board look for in a plane crash investigation? A flight expert explains.

One person is dead and several were injured after a small business jet crashed into a parked plane as it arrived at Scottsdale Airport in Arizona, just east of Phoenix, on Monday afternoon.

The Federal Aviation Administration said the Learjet 35A veered off the runway as it arrived at Scottsdale Municipal Airport around 2:45 p.m. It hit a Gulfstream 200 business jet that was parked on private property, officials said at a news conference.