United Airlines CEO Oscar Munoz testified before Congress on Tuesday that his airline will not look to remove someone from a flight after they are seated on the plane.

Munoz's appearance at the House Transportation and Infrastructure Committee hearing comes in the aftermath of an altercation on board a United plane last month. A passenger was dragged from a flight at Chicago's O'Hare International Airport and video of the event was seen far and wide online.

"Our employees did not have the authority to do what was right or to use, frankly, their common sense as some of you outlined, and in that moment, for our customers and our company, we failed," Munoz said Tuesday. "As CEO, at the end of the day, that is on me and this has to be a turning point for the 87,000 people and professionals here at United."

Munoz continued to say it's his mission to make changes. Congressman Bill Shuster, a Pennsylvania Republican who chairs the Transportation and Infrastructure Committee, warned the witnesses that if he did not see improved practices by airlines, they would not like Congress' forthcoming response.