ARIZONA

4 survivors of tour helicopter wreck taken to hospital.

A helicopter tour in the Grand Canyon late Saturday ended in a fiery crash, killing three of the seven people onboard and injuring four others, police said. The chopper was carrying six passengers and a pilot. Federal investigators were heading to the scene.

GRAND CANYON NATIONAL PARK, ARIZ. — Four survivors of a deadly tour helicopter crash onto the jagged rocks of the Grand Canyon were being treated at a Nevada hospital on Sunday while crews tackled difficult terrain in a very remote area to try to recover the bodies of three other people.

Six passengers and a pilot were on board the Papillion Grand Canyon Helicopters chopper when it crashed under unknown circumstances on Saturday evening on the Hualapai Nation’s land near Quartermaster Canyon, by the Grand Canyon’s West Rim. A witness said he saw flames and black smoke spewing from the crash site, heard explosions and saw victims who were bleeding and badly burned.

“It’s just horrible,” witness Teddy Fujimoto said. “And those victims — she was so badly burned. It’s unimaginable, the pain.”

Windy conditions, darkness, the remoteness of the area and the rugged terrain made it difficult to reach the helicopter’s wreckage, Hualapai Nation police Chief Francis Bradley said. Rescue crews had to be flown in, walk to the crash site and use night vision goggles to find their way around, he said.

The survivors were airlifted to a Las Vegas hospital by around 2 a.m. Sunday, Bradley said. The identities and nationalities of the dead and injured weren’t immediately released.

National Transportation Safety Board officials were expected at the crash scene by Sunday afternoon to begin investigating what caused the chopper to go down, Bradley said. The Federal Aviation Administration also will be investigating the crash of the Eurocopter EC130, spokesman Allen Kenitzer said.

National Weather Service meteorologists in Flagstaff and Phoenix said wind conditions were an estimated 10 mph with gusts of 20 mph around the time of the crash.

Fujimoto, a Las Vegas photographer who was doing a wedding shoot at the time of the crash, said he suddenly saw people running toward the edge of a gulch. He said he heard gasps and went to check out the commotion coming from about 600 feet below.

“In the gulch, there was a helicopter, flames, smoke,” he said. “It was horrible.”

He said that’s when two or three small explosions went off in the wreckage and people weren’t sure what to do. He said some pilots of helicopters that were also out there decided to try descending into the gulch.

Fujimoto said he saw two badly injured women and one of them was yelling out a man’s name. He said one of them “was pretty much burned all over.”

The other woman, he said, was “covered in blood” and was bleeding from her head or neck.

Fujimoto said he has taken helicopter rides for photo shoots for the past few years and generally felt safe. He said the crash aftermath is the worst thing he’s ever witnessed.

Calls and emails to Nevada-based Papillion for comment on the crash were not immediately returned Sunday.

The company’s website says it flies roughly 600,000 passengers a year around the Grand Canyon and on other tours. It notes that it “abides by flight safety rules and regulations that substantially exceed the regulations required by the Federal Aviation Administration.”

In August 2001, a Grand Canyon tour helicopter operated by Papillion crashed and burned near Meaview, Arizona. The pilot and five passengers died.