Following the dramatic video of an American Airlines flight evacuating on a Denver runway last month, Sen. Tammy Duckworth of Illinois is sending a letter to new FAA Administrator Bryan Bedford demanding answers on evacuation safety.

"The FAA needs an evacuation standard that reflects the reality of flying today," Duckworth told CBS News in a statement. "The American people deserve to know whether the FAA is taking this responsibility seriously and complying with the law to ensure the flying public can be safely evacuated from an aircraft during an emergency."

Duckworth, the ranking Democrat on the Senate Aviation Subcommittee, is concerned about the ability to evacuate an airliner in 90 seconds or less.

"Video showed passengers exiting with carry-on bags and, according to at least

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