LVIV, Ukraine -- A fighter jet clipped the ground and sheared through a crowd of spectators Saturday at an air show in western Ukraine before exploding in a ball of fire, killing at least 78 people and injuring 138 in the deadliest air show accident in memory.
The Su-27 aircraft slid backward on its wingtip and nose through hundreds of spectators, then cartwheeled, throwing off flaming debris, until it exploded at the Sknyliv air base in the city of Lviv.
Bohdan Hupalo, 18, said he was posing for a picture when the plane came down. He dived to the ground and saw the jet race over him, missing by only a few yards.
"There weren't any survivors among those who fell down late -- they were cut down like grass," he said. When Hupalo opened his eyes, he said he was surrounded by human remains.
"I will never forget this tragedy," he said from his hospital bed, where he was being treated for an injured back.
After the crash, parents frantically searched for missing children and used the public address system to call out their names. One group of children with cuts on their faces and arms sat stunned on the ground.
Body parts littered the tarmac at the air base. One woman was seen clutching the lifeless body of a child in front of a jet on display; another man was covered in blood while he examined the stump remaining of his right hand.
The Emergency Situations Ministry said 138 people had been treated at hospitals in Lviv, and 24 who were lightly injured had been released. It said the death toll could rise because many of the injured were in critical condition,
Possible engine failure
The two crew ejected and survived, the Defense Ministry said. They suffered back injuries, medical officials told Interfax news agency, but they were seen walking away from the crash scene without assistance.
The plane was in the sky for about two minutes and had been performing advanced maneuvers. Then it went silent and headed toward the ground, banking left, with its wingtip shearing trees and touching another plane on the ground. It then hit the tarmac.
The Defense Ministry's western operational command said engine failure was the preliminary reason for the crash, but ministry headquarters in the capital Kiev declined to comment on the cause and refused to confirm an engine malfunction.
President Leonid Kuchma, who cut short his vacation in Crimea to rush to the accident scene, implied that a technical fault could have been to blame.
After Saturday's crash, Kuchma fired the commander of the air force and the top officer from the 14th Air Corps, to which the jet belonged.
Government investigators began questioning the jet's crew, along with other witnesses and watching video of the crash. Prosecutors also started an investigation.
One of the world's most deadly previous air show crashes was at a U.S. air base in Germany in 1988, when Italian jets performing a complicated maneuver collided and spiraled into the crowd, killing 70 and injuring at least 400.
In Saturday's crash, about 1,500 people were watching the first day of the free air show, which marked the 60th anniversary of the local air force unit. Thousands more had been expected Sunday.
Kuchma said the country would consider a ban on air shows because of the accident.
Yaroslav Vaida, a rescue service employee, lost his 24-year-old son and was himself severely injured in the spine.
"I don't want to live, I have no sense to live," he said in the hospital. "I can hardly speak, but have to say this."
At one Lviv hospital, a list of 33 people who had been treated there -- ranging in age from 2 to 62 -- was scribbled on the wall. Of those patients, 11 had died.
Lviv's governor, Liubomyr Buniak, announced two days of mourning starting Sunday.
Kuchma promised more than $1.9 million would be set aside from the federal budget in an initial fund for funerals and first aid for victims. Russian President Vladimir Putin sent his condolences to Kuchma, the presidential press office said.
The Sukhoi Su-27 has been in service since 1985, and has the NATO code name "Flanker." Its speed and maneuverability made it one of the key planes in the former Soviet air force, and it resembles the U.S. F-15 Eagle fighter with two rear stabilizers and twin engines.
A Sukhoi Su-30 jet -- a similar twin-engine design to the Su-27 -- crashed at start of the Paris air show in 1999, but the two pilots ejected and no one was injured.
In September 2000, another Su-27 crashed during maneuvers close to Zhytomyr, western Ukraine, killing the pilot.