SANFORD, Fla. - A small plane carrying the husband of a NASCAR executive crashed into a neighborhood Tuesday and engulfed two houses in flames, killing both people aboard the aircraft and three others on the ground.

The pilot had reported smoke in the cockpit and was trying to make an emergency landing when the twin-engine plane went down in suburban Orlando, officials said.

NASCAR confirmed that Dr. Bruce Kennedy, a Daytona Beach plastic surgeon and husband of International Speedway Corp. President Lesa France Kennedy, and NASCAR Aviation pilot Michael Klemm were among the dead.

The identities of the victims on the ground were not immediately released.

Authorities said an adult and two children died in the homes that were quickly gutted by fire after the airplane crashed.

Among the three survivors was a boy about 10 years old who had burns over 80 to 90 percent of his body.

Eric Domnitz, who lives just down the street from the crash site, hurried to the scene with a fire extinguisher and said he saw some of the victims.

"It's in my head. The woman was just melting. It looked like her skin was just melting off," he said. "The guy, he was melting. He looked like wax."

Matt Minnetto, an investigator with the Sanford Fire Department, said the plane itself was scattered in several pieces. The crash spilled aviation fuel, contributing to the fire's spread.

A firefighter who responded to the blaze was also hurt trying to reach the victims.

The twin-engine Cessna 310 had been traveling from Daytona Beach to Lakeland when the pilot reported smoke in the cockpit shortly before the crash, said Kathleen Bergen with the Federal Aviation Administration.

The pilot was trying to land at the Orlando Sanford International Airport when the plane went down about a mile or two north of the airport, Bergen said.

The plane was registered to Competitor Liaison Bureau Inc. of Daytona Beach. Records show the company is registered under the name of William C. France, the late chairman of NASCAR who died June 4 at his Daytona Beach home.

Lesa France Kennedy, whose husband died in the plane crash, is France's daughter. International Speedway Corporation, of which she is president, owns or operates 13 of the nation's major motorsports facilities.