UPDATE: NTSB investigate plane crash in Trussville

It's day two in the plane crash investigation that left two people dead.

The private plane crashed late Friday night. The family confirmed the names of the victims as Allan and Cali Campbell from Florence, Mississippi. Sunday, NTSB and the FAA investigate.

"The purpose of our investigation is to find out what happened and why," says Tim Monville with NTSB.

But, those questions are yet to be answered. ABC 33/40 was the only station rolling from sky, part of the Cessna 210 plane and debris was scattered amongst the Trussville trees on Goodner Mountain.

We learned that the pilot was chartered to fly blood specimens for work to Birmingham from Mississippi.

Monville says the pilot was in visual flight rules. "He was clear of clouds, but there was weather in the Birmingham area," says Monville.

That's when the pilot asked air traffic controllers to pick up Instrument Flight Rules (IFR) clearance. IFR allows you to fly in the clouds to get to a runway.

Controllers attempted to direct{}the pilot{}into Birmingham. That's when air controllers lost radar and communication with the plane, just 13 miles northeast of Birmingham Shuttlesworth airport.

Lieutenant J.B. Mayes with Jefferson County says, "It just takes time with an investigation of this magnitude." He made sure the area stayed secure for the investigation, but says it's not an easy task considering the location of plane. "You can only go so far with a Hummer, and even with a four wheeler you can only get to within a half a mile of the location, then you just have to walk," says Mayes. {}

Meantime, day two of the investigation continues as Monville figures out how the tragic crash occurred. "We're still in a very early, very basic and preliminary fact gathering role right now," says Monville.