Federal investigators say they found parts of the Asiana airlines plane that crashed at San Francisco International in the waters of San Francisco Bay.
National Transportation Safety Board chairwoman Deborah Hersman says the lower portion of the plane's tail cone was found in rocks inside a seawall.
A "significant piece" of the tail of the aircraft was in the water, and other plane parts were visible at low tide.
She says other debris from the seawall was found several hundred feet up the runway.
The plane crashed on Saturday, killing two people and sending more than 180 to hospitals.
Hersman says investigators plan to interview the plane's pilot on Monday. She says the pilot was experienced flying other planes but was working to get his rating on the Boeing 777.
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Federal safety officials say the pilots of Asiana Flight 214 were flying too slowly as they approached San Francisco airport on Saturday, triggering a warning that the jetliner could stall, and then tried to abort the landing seconds before crashing.
National Transportation Safety Board chief Deborah Hersman says the Boeing 777 was traveling at speeds well below the target landing speed of 137 knots per hour, or 157 mph. She says "We're not talking about a few knots."
Hersman says 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 says, basing her comments on an evaluation of the cockpit voice and flight data recorders.
And she says at 1.5 seconds before impact, there was a call for an aborted landing.
The crash at San Francisco International Airport killed two 16-year-old girls from China and injured dozens of others.
San Francisco Fire Chief Joanne Hayes-White says that there are two dead in the crash of an Asiana jetliner at San Francisco International Airport.
She also said several passengers were unaccounted for. She said, "This is a work in progress."
She said that the scene has been secured and has been turned over to the FBI. Terrorism has been ruled out.
She said at least 48 people were initially transported from the scene to area hospitals.
The Federal Aviation Administration said Flight 214 crashed while landing at 11:36 a.m. PDT. A video clip posted to YouTube showed smoke coming from a jet on the tarmac. Passengers could be seen jumping down the emergency slides.
San Francisco General Hospital says it is treating eight adults and two children who were critically injured in a plane crash at San Francisco International Airport.
Hospital spokeswoman Rachael Kagan says the adult patients range in age from 20 to their 40s. It was not immediately clear the ages of the children.
San Francisco-area broadcasters KNTV, KCBS and KTVU have reported that there were fatalities in Saturday's crash of the Asiana airlines flight from Seoul, South Korea.
But The Associated Press contacted police, fire and coroner's officials and was unable to confirm any deaths.
A federal aviation official says an Asiana Airlines flight has crashed while landing at San Francisco airport. It was not immediately known whether there were any injuries.
Federal Aviation Administration spokeswoman Lynn Lunsford says the Boeing 777 crashed at San Francisco Airport while landing on Saturday.
A video clip posted to Youtube shows smoke coming from a silver-colored jet on the tarmac. Passengers could be seen jumping down the inflatable emergency slides.
Copyright 2015 by The Associated Press. All Rights Reserved.