Fatal Incident at Denver International Airport: Pedestrian Struck by Frontier Airlines Aircraft
DENVER — A pedestrian was fatally struck by a Frontier Airlines aircraft on a runway at Denver International Airport on the night of May 8, 2026. The aircraft, an Airbus A321neo operating as Flight 4345 to Los Angeles, aborted its takeoff after the collision, which caused an engine fire. Passengers and crew evacuated via emergency slides. The incident is under investigation by multiple federal and local agencies.
Incident Details
The event occurred at approximately 11:19 p.m. local time on Runway 17L. According to officials, the pedestrian, later identified as Michael Mott, 41, scaled an 8-foot perimeter fence topped with barbed wire and entered the airfield.
Airport officials stated that the fence was found intact after the incident and that Mott was not believed to be an airport employee. Reports from airport authorities and the Transportation Security Administration indicate that the individual was struck approximately two minutes after entering the runway area.
Security camera footage released by the airport shows Mott walking on the runway as the aircraft, traveling at an estimated 223 km/h (approximately 139 mph) during its takeoff roll, approached.
The pilot reported to air traffic control: "We just hit somebody... we have an engine fire." The aircraft stopped on the runway, and the pilot subsequently reported smoke in the cabin and initiated an evacuation. The engine fire was extinguished by the Denver Fire Department.
Casualties and Injuries
Michael Mott died at the scene from multiple blunt and sharp force injuries sustained from the aircraft's engine, according to the Denver City and County Medical Examiner's Office. Dr. Sterling McLaren, the chief medical examiner, classified the death as a suicide.
A total of 12 individuals on board reported minor injuries, with five transported to local hospitals for treatment. No other serious injuries were reported among the 224 passengers and 7 crew members.
Evacuation and Aftermath
Passengers and crew were evacuated via inflatable slides onto the runway. Emergency crews transported them by bus to the terminal. The majority of passengers departed for Los Angeles on a replacement flight.
Runway 17L was closed for investigation and reopened at approximately 11:00 a.m. local time the following day.
Investigation
The National Transportation Safety Board (NTSB), the Federal Aviation Administration (FAA), the Transportation Security Administration (TSA), and the Denver Police Department are investigating the incident. Airport officials stated they will review security protocols along the airport's 36 miles of perimeter fencing.
According to Denver Police Chief Ron Thomas, no suicide note was recovered. Court records obtained by sources show Mott had a criminal history spanning over 20 years across several Colorado counties, including arrests for attempted murder, domestic violence, assault, second-degree burglary, and felony assault on a peace officer. He had been sentenced to prison on at least three occasions since 2002.
Statements
Frontier Airlines stated they are investigating the incident in coordination with safety authorities.
Transportation Secretary Sean Duffy stated that the individual "breached airport security... deliberately scaled a perimeter fence, and ran out onto a runway."
Lawsuit
Austin-based DJC Law and Denver-based Ramos Law have announced an intent to sue the city and county of Denver on behalf of passengers aboard the flight. The lawsuit alleges failures in perimeter security and intrusion-detection systems, as well as a failure to promptly alert air traffic controllers and suspend runway operations. The firms are seeking $10 million in damages.
Denver International Airport CEO Phil Washington stated the airport is continuing to investigate the incident and is working with Frontier Airlines to improve evacuation procedures.