In this photo provided by the National Transportation Security Board (NTSB)

In this photo provided by the National Transportation Security Board (NTSB)

Speed possible cause of SF plane crash

Pilots of Asiana Flight 214 were flying too slowly as they approached San Francisco airport, triggering a control board warning that the jetliner could stall, and then tried to abort the landing seconds before crashing, according to federal safety officials.

SAN FRANCISCO — Pilots of Asiana Flight 214 were flying too slowly as they approached San Francisco airport, triggering a control board warning that the jetliner could stall, and then tried to abort the landing seconds before crashing, according to federal safety officials.

Investigators also said they were looking into the possibility that rescue crews ran over one of the two teenagers killed in the crash on Saturday. Officials released the details without explaining why the pilots were flying so slow — or why rescue officials didn’t see the girl.

The Boeing 777 was travelling at speeds well below the target landing speed of 137 knots per hour, or 157 mph, said National Transportation Safety Board chief Deborah Hersman at a briefing Sunday on the crash.

“We’re not talking about a few knots,” she said.

Hersman said the aircraft’s stick shaker — a piece of safety equipment that warns pilots of an impending stall — went off moments before the crash. The normal response to a stall warning is to increase speed to recover control.

There was an increase several seconds before the crash, she said, basing her comments on an evaluation of the cockpit voice and flight data recorders that contain hundreds of different types of information on what happened to the plane.

And at 1.5 seconds before impact, there was a call for an aborted landing, she said.

The new details helped shed light on the final moments of the airliner as the crew tried desperately to climb back into the sky, and confirmed what survivors and other witnesses said they saw: a slow-moving airliner.

Pilots normally try to land at the target speed, in this case 137 knots, plus an additional five more knots, said Bob Coffman, an American Airlines captain who has flown 777s. He said the briefing raises an important question: “Why was the plane going so slow?”

The plane’s Pratt & Whitney engines were on idle, Hersman said.

The normal procedure in the Boeing 777, a wide-body jet, would be to use the autopilot and the throttle to provide power to the engines all the way through to landing, Coffman said.

There was no indication in the discussions between the pilots and the air traffic controllers that there were problems with the aircraft.

Among the questions investigators are trying to answer was what, if any, role the deactivation of a ground-based landing guidance system played in the crash. Such systems help pilots land, especially at airports like San Francisco where fog can make landing challenging.

Altogether, 305 of the 307 people aboard made it out alive in what survivors and rescuers described as nothing less than astonishing after a frightful scene of fire burning inside the fuselage, pieces of the aircraft scattered across the runway and people fleeing for their lives.

The flight originated in Shanghai, China, stopped over in Seoul, South Korea, before making the nearly 11-hour trip to San Francisco. The South Korea-based airline said four South Korean pilots were on board, three of whom were described as “skilled.”

Among the travellers were citizens of China, South Korean, the United States, Canada, India, Japan, Vietnam and France.

There were at least 70 Chinese students and teachers heading to summer camps, according to Chinese authorities.

As the plane approached the runway under clear skies — a luxury at an airport and city known for intense fog — people in nearby communities could see the aircraft was flying low and swaying erratically from side to side.

On board, Fei Xiong, from China, was travelling to California so she could take her 8-year-old son to Disneyland. The pair was sitting in the back half of the plane. Xiong said her son sensed something was wrong.

“My son told me: ‘The plane will fall down, it’s too close to the sea,”’ she said. “I told him: ‘Baby, it’s OK, we’ll be fine.”’

On audio recordings from the air traffic tower, controllers told all pilots in other planes to stay put after the crash. “All runways are closed. Airport is closed. San Francisco tower,” said one controller.

At one point, the pilot of a United Airlines plane radioed.

“We see people … that need immediate attention,” the pilot said. “They are alive and walking around.”

“Think you said people are just walking outside the airplane right now?” the controller replied.

“Yes,” answered the pilot of United Flight 885. “Some people, it looks like, are struggling.”

When the plane hit the ground, oxygen masks dropped down, said Xu Da, a product manager at an Internet company in Hangzhou, China, who was sitting with his wife and teenage son near the back of the plane.

When he stood up, he said he could see sparking — perhaps from exposed electrical wires.

He turned and could see the tail where the galley was torn away, leaving a gaping hole through which they could see the runway. Once on the tarmac, they watched the plane catch fire, and firefighters hose it down.

“I just feel lucky,” said Xu, whose family suffered some cuts and have neck and back pain.

In the chaotic moments after the landing, when baggage was tumbling from the overhead bins onto passengers and people all around her were screaming, Wen Zhang grabbed her 4-year-old son, who hit the seat in front of him and broke his leg.

Spotting a hole at the back of the jumbo jet where the bathroom had been, she carried her boy to safety.

“I had no time to be scared,” she said.

At the wreckage, police officers were throwing utility knives up to crew members inside the burning wreckage so they could cut away passengers’ seat belts. Passengers jumped down emergency slides, escaping from billowing smoke that rose high above the bay.

Nearby, people who escaped were dousing themselves with water from the bay, possibly to cool burn injuries, authorities said.

By the time the flames were out, much of the top of the fuselage had burned away. Inside The tail section was gone, with pieces of it scattered across the beginning of the runway. One engine was gone, and the other was no longer on the wing.

San Mateo County Coroner Robert Foucrault said senior San Francisco Fire Department officials notified him and his staff at the crash site on Saturday that one of the 16-year-olds may have been struck on the runaway.

Foucrault said an autopsy he expects to be completed by Monday will involve determining whether the girl’s death was caused by injuries suffered in the crash or “a secondary incident.”

He said he did not get a close enough look at the victims on Saturday to know whether they had external injuries.

Foucrault said one of the bodies was found on the tarmac near where the plane’s tail broke off when it slammed into the runway. The other was found on the left side of the plane about 30 feet away from where the jetliner came to rest after it skidded down the runway.

Get local stories you won't find anywhere else right to your inbox.
Sign up here

Just Posted

Alberta recorded a single-day record of over 57,000 doses of COVID-19 vaccine administered. (Photo courtesy Alberta Health Services Twitter)
Alberta hits daily record of COVID-19 vaccine doses administered

Central zone has administered 111,735 doses of the COVID-19

Alberta reported an additional 1,980 cases of COVID-19 Friday. (NIAID-RML via AP)
Red Deer adds 37th death from COVID-19, active cases drop

Alberta Health identified an additional 1,980 cases of the virus province-wide

Kris Sturgess with Calgary Ghostbusters. (Photo from GoFundMe)
GoFundMe account salutes Red Deer prop builder

Kris Sturgess died unexpectedly April 28

A rodeo south of Bowden drew a huge crowd on May 1 and 2, 2021. (Photo courtesy Mom’s Diner’s Facebook page)
FILE - A firefighter wears a mask as he drives his truck. THE CANADIAN PRESS/Jonathan Hayward, File
VIDEO: Flames rip through Edmonton-area seniors complex, but no fatalities

ST. ALBERT, Alta. — Fire has destroyed part of a retirement complex… Continue reading

Toronto FC coach Chris Armas talks with his players during a CONCACAF Champions League quarterfinal second leg soccer match against Mexico's Cruz Azul at Azteca stadium in Mexico City, Tuesday, May 4, 2021. THE CANADIAN PRESS/AP/Fernando Llano
Toronto FC coach Chris Armas returns to Red Bull Arena to face former team

Toronto FC coach Chris Armas returns to Red Bull Arena to face former team

Gymnastics Canada skipping Olympic qualifier because of COVID-19 concerns

Gymnastics Canada skipping Olympic qualifier because of COVID-19 concerns

Runner Melissa Bishop-Nriagu speaks to the media at the opening news conference at the Canadian Track and Field Championships, in Montreal, Thursday, July 25, 2019. THE CANADIAN PRESS/Ryan Remiorz
After pregnancy, injuries and a pandemic, Bishop-Nriagu finally hitting her stride

After pregnancy, injuries and a pandemic, Bishop-Nriagu finally hitting her stride

Lille's Burak Yilmaz, center, reacts with teammates after scoring during their French League One soccer match between Lille and Nice in Villeneuve d'Ascq, northern France, Saturday May 1, 2021. (AP Photo/Michel Spingler)
Canada’s Jonathan David scores milestone goal as Lille moves 4 points ahead of PSG

Canada’s Jonathan David scores milestone goal as Lille moves 4 points ahead of PSG

Jean Carlo Salas of Costa Rica vies for the ball with Canada's Ian Bennett (right) during a CONCACAF Futsal Championship in Guatemala City, Guatemala, Wednesday, May 5, 2021. THE CANADIAN PRESS/HO-CONCACAF-Norvin Mendoza MANDATORY CREDIT
Canada denied a trip to the FIFA Futsal World Cup in penalty shootout loss to Panama

Canada denied a trip to the FIFA Futsal World Cup in penalty shootout loss to Panama

Canadian Stephen Ames one shot back of leaders at Regions Tradition

Canadian Stephen Ames one shot back of leaders at Regions Tradition

Team Canada skip Kerri Einarson leaves the ice after defeating China at the Women's World Curling Championship in Calgary, Alta., Friday, May 7, 2021.THE CANADIAN PRESS/Jeff McIntosh
Canada’s Einarson beats China 6-4, qualifies for playoffs at world curling playdowns

Canada’s Einarson beats China 6-4, qualifies for playoffs at world curling playdowns

Prime Minister Justin Trudeau walks to a news conference in Ottawa on Tuesday May 4, 2021. A broad coalition of MPs from all five parties wants the federal government to support waiving the global rules that guard vaccine trade secrets. THE CANADIAN PRESS/Adrian Wyld
As MPs urge support, Trudeau demurs on whether government backs COVID-19 waiver

As MPs urge support, Trudeau demurs on whether government backs COVID-19 waiver

Most Read