The attorney general said investigators from the Missouri State Highway Patrol will also look at the boat's canopy and how hard it was for the passengers and crew to get off during the chaotic event.
Divers have recovered a video recorder from the sunken duck boat that may provide clues to the disaster.
Seventeen people died when the Ride the Ducks boat went down Thursday night in Table Rock Lake on the outskirts of Branson after a thunderstorm generated near-hurricane strength winds. The boat was submerged in 80 feet (24 meters) of water. Tia is standing next to her 76-year-old uncle, who is by her husband Glenn, their 13-year-old nephew Donovan Hall and 9-year-old cousin Reece.
Tia Coleman of Indianapolis, Indiana, lost nine members of her family in the accident, including her husband and three children, ages 1 to 9.
Hawley could not say whether investigators had spoken with the captain, one of 14 survivors.
USA Today reported that in the 1999 incident, the NTSB charged that the Coast Guard failed to adequately oversee the private operation and the owner failed to properly maintain a seal that allowed water to get into the vehicle.
The company hasn't commented on Coleman's account of the tour, which usually begins with a tour of downtown Branson, known for its country shows and entertainment, before the vessel enters the lake for a short ride on the water. It has been brought to NTSB labs in Washington, D.C., for analysis.
Coleman said she hit her head as she tried to exit the boat and was later pulled from the water.
Steven Paul could see the duck boat's danger nearly immediately. Spokesmen said the Department of Transportation doesn't regulate duck boats because they're amphibious, and the Department of Public Safety doesn't in this case because it's a commercial vessel, as opposed to a recreational one.
Funeral services are set for Wednesday for two Arkansas victims of a duck boat accident in a Missouri lake. She said somehow she was able to reach the boat.
The boat was lifted out of Table Rock Lake, Missouri, with a crane this morning. The canopies on top of the vessels make it almost impossible to escape if they are tipped over. They were later modified for use for sightseeing in cities around the U.S. The long, narrow vehicles are shaped like boats, but have wheels they use when on land.
"The safety board is particularly concerned that both adults and children wearing life jackets are at risk of being drowned if entrapped by the overhead canopy", the report reads. The National Highway Traffic Safety Administration determined that the front axle on the boat broke, causing the driver to lose control.
Duck boats have been linked to the deaths of more than 40 people since 1999, and a private inspector said on Saturday that he had warned the operator that design flaws meant that the boat's engines and pumps might fail in bad weather. "We will continue to do all we can to assist the families who were involved and the authorities as they continue with the search and rescue".
Crews were getting ready to hoist it onto a flat bed truck so it could be turned over to the NTSB so the agency could continue its investigation. She said she's been getting through the tragedy with a lot of prayers, and thanked the support of family members and friends.
The Coast Guard requires life jackets on normal boats, but for amphibious tour boats, which are part boat and part bus, recommendations are left up to the captain.
The christening photos were captured by photographer Matt Holyoak and four of them have now been released to the public. Princess Charlotte nearly stole the show - again - by affectionately holding her baby brother's hand during the shoot.
On abortion, Kavanaugh voted in October to delay an abortion for a teenage immigrant who was in government custody. If Kavanaugh wins confirmation, he would cement the conservative 5-4 tilt on the Supreme Court.
According to one source, the meeting was kept private because Trump asked Putin to give him some time to consider the offer. Coats, being the top USA intelligence official that he is, of course reacted as if he hadn't been told a thing about it.
We wondered how far this race would last, we need wonder no more as Comcast have officially pulled out of the deal to acquire Fox. Sky's independent committee has recommended that shareholders accept Comcast's offer, a further blow to Mr Murdoch.
Pogba, 25, can now add the World Cup to a trophy cabinet that already includes four Serie A titles and the Europa League. We've had incredible games, stupidly amusing moments and some of the best punditry and commentary in years.
In fact, Long's shocked reaction became a meme on social media. "I mean, who doesn't love LeBron James? ". Baker Mayfield, who was drafted by the Browns out of Oklahoma, won " Best College Athlete " honors.
The US dollar went down on Friday amid President Donald Trump's criticism about the Federal Reserve's current monetary tightening. The White House in June already threatened to extend punishing USA duties progressively to up to $450 billion in Chinese imports.
A pair of Palestinian teenagers who were on a rooftop when they were targeted by an Israeli air raid were reported killed. Israel's army said Saturday's strikes targeted military facilities belonging to Hamas.
Anthony's time in Oklahoma City lasted just one season, where the 34-year-old averaged 16.2 points and 5.8 rebounds over 78 games. Anthony averaged 11.8 points in the series, shooting just 37.5 percent from the field and 21.4 percent from 3-point range.
Philip Davies has submitted a letter of no confidence in Mrs May after "losing trust" in her ability to deliver Brexit. Donald Trump on his visit to the United Kingdom last week said Johnson would make "a great prime minister".
He was drafted by the Oakland Athletics and moved on to play for the Midland RockHounds in 2013 through 2014. Harper hit 13 home runs in the first round , eliminating Freddie Freeman and advancing to the semifinals.
Lewis Hamilton believes auto failed before he went off
Sweden's Marcus Ericsson put Sauber in the points with ninth and New Zealander Brendon Hatley was 10th for Toro Rosso. But, at the team's home race, Mercedes called off the fight: "Valtteri, this is James (Vowles - chief strategist).
Trump finds it 'inconceivable' lawyer would tape a client
In August 2016, AMI paid McDougal $150,000 for the right to her story but never published an article based on her account. But he said no money was actually ever transferred, and the recording itself amounted to "powerful exculpatory evidence".
Trump hits the links at his Scottish golf resort
President Donald Trump is setting low expectations for his Monday's summit in Helsinki with Russian President Vladimir Putin . Senator Rand Paul (R-KY) attacked CNN's Wolf Blitzer during his show on Monday.
Jabari Parker Signs 2-Year $40 Million Deal With Bulls
Parker spent his first four National Basketball Association seasons with the Milwaukee Bucks , has torn his left ACL twice. No word on the amount of the deal being discussed, or if the Bucks will match, but the move is a curious one for Chicago.
Trump says he misspoke on Russian meddling
They met in private, with only translators present, but Schumer referred to notes that were taken in debriefings of the meeting. Putin spoke frankly on the topic of Crimea, saying that the USA delegation had expressed its view that the invasion was illegal.
Kerber beats Williams to claim maiden Wimbledon title
Novak Djokovic advanced to a fifth Wimbledon final with a 6-4, 3-6, 7-6 (9), 3-6, 10-8 victory over Rafael Nadal . Williams played in a Wimbledon final on Saturday in just her second major back after having a baby in September.
Trump backtracks on Brexit, says US-UK ties indispensable
There's no love lost between the US President and Sadiq Khan, who Trump said had done a "terrible job" as London mayor. Later they will hold talks with the foreign secretary at Chequers - the PM's country residence in Buckinghamshire.