GRAND JUNCTION, Colo. (AP) &045; NBC Sports chairman Dick Ebersol and his college-aged son emerged from the fiery wreckage of a corporate jet after it crashed during takeoff and burst into flames, killing two crew members. Rescuers were still searching for Ebersol’s younger son, whose seat was missing from the smoldering ruins.

The 18-seat charter jet with six people on board crashed Sunday morning at Montrose Regional Airport in southwest Colorado, not far from the Telluride Ski Area. A heavy snowstorm had lightened up before the plane prepared to depart for South Bend, Ind., where Ebersol’s son Charles is a senior at Notre Dame.

A witness said the impact ripped the cockpit from the fuselage, and that Charles Ebersol helped his 57-year-old father to safety through the front of the plane.

A second son, 14-year-old Edward, was missing, Denver NBC affiliate KUSA-TV reported. The station said crews searched by helicopter and on the ground, but that even &uot;Teddy&uot; Ebersol’s plane seat could not be found. A Montrose County Sheriff’s spokeswoman said the boy had not been located by late Sunday.

The sheriff’s office also said two people were killed in the crash, though their identities were not released. KUSA said the victims were the pilot and co-pilot. Hospital officials said three men were treated after the crash. Federal officials said the aircraft also had a flight attendant on board.

Ebersol’s wife, actress Susan Saint James, was not on the plane, the station said. The family lives in Connecticut.

Eyewitness Chuck Distel told The Associated Press by phone that he was driving on a highway parallel to the runway when he saw the plane skid sideways through a fence and brush before hitting a roadway that ripped the cockpit from the fuselage, leaving it an unrecognizable wreck. The Denver Post reported that the jet lifted off briefly before crashing.