A spokesperson for Avianca at El Dorado said the company would have no immediate information or statement.

According to Jane's All The World's Aircraft, Boeing produced the 707 model jetliner for commercial use from 1955 until 1982. The company had no immediate comment on the crash.

Last Nov. 27, an Avianca Boeing 727 was bombed out of the sky minutes after takeoff from Bogota on a domestic flight to Cali. The explosion killed all 107 people on board.

The Extraditables group, made up of drug traffickers fearing extradition to the United States, claimed responsibility for the bombing in a phone call to the Colombian radio network Caracol.

Crawley, the Coast Guard officer, said several cutters and boats were en route to the area just in case some debris or victims were in the water.

"We have reports that the crash is on land and that it's in four major pieces," Crawley said.

Control tower officials said the plane may have lost power in one of its four engines. Bergen, the FAA spokesperson, said the agency had reports the plane lost a second engine as well.

Peter Whitelaw, who lives down a hill from the crash site, said he could see a small portion of the downed plane through the trees. He said there were few homes in the area.

"I heard a rumbling, a very loud rumbling," said Whitelaw, who was on an indoor tennis court at the time. "It sounded as if your car was gearing back and you were stripping the gears, and the typical rumble you get from a jet plane going over."

"Normally in bad weather they circle out here but this was louder than normal. Then we heard the crash," he said, adding that through the woods "I see no flames or smoke, or smell anything."

He said the road leading to the crash site was clogged with emergency vehicles.

"These are very narrow roads," Whitelaw said. "They're trying the best they can to get to where it crashed. They're running up the road with stretchers and medical equipment." Most phone lines were down and power was cut off, he said.

"I happened to see a plane going very low," said another witness, David Johnson. "At the altitude it was at I really could not hear any engines. So I am assuming the engines had conked out but there really was no fire or anything."

The area of the crash is near Oyster Bay Harbor on the north shore of Long Island, just south of the Sagamore Hill National Historic Site, home of President Theodore Roosevelt. It is a isolated, wooded area of expensive homes.

Nick Fisher, a camera operator for WCBS-TV, said there were "maybe hundreds" of rescue workers and volunteers caring for the injured.

"The plane is laying on an incline in a wooded area adjacent to a house, broken in several sections," Fisher said. "Adjacent to the airplane there is a large area where victims are being attended to, and ambulances ready to transport those most needing assistance."