Investigators are trying to learn why a small plane crashed on New College of Florida property near Sarasota Bradenton International Airport on Saturday afternoon.

The pilot, identified Sunday as 70-year-old John William Andoyno of Hayward, Wis., was killed, and his passenger, 63-year-old William S. Jackson of Ann Arbor, Mich., was badly injured.

The two men took off from the airport around 3:30 p.m. in a home-built Seawind 3000. The single-engine amphibian plane crossed U.S. 41 before, according to witnesses, starting to wobble.

It went down across the street from the end of the runway, behind the R.V. Heiser Natural Science Complex, and burst into flames.

Richard Parker, who lives in a house nearby, saw the crash. He said he ran over to find the passenger on fire, told him to drop and roll, but couldn't save the pilot.

"The pilot was still alive, and he was calling out for me, but it looked like he was trapped," Parker said. "And he was pretty engulfed in flames at that point, and I could only get about four or five feet away from him and got a little burn on my face. I just had to tell him I was sorry and couldn't do anything."

The passenger suffered second- and third-degree burns over most of his body. He is listed in critical condition at Tampa General Hospital.

The National Transportation Safety Board is investigating.