Man Ingested By Frontier Airlines Engine Was Denver’s 6th Airfield Security Breach In 3 Years

Published Aug 20, 2026, 4:47 PM EDT Journalist – Aaron is an aviation and travel journalist with 14 years of experience in the travel and tourism industry. His background spans airport operations, aviation infrastructure, and travel consulting, having worked with global organizations across New Zealand, Europe, and North America. Combining industry expertise with firsthand travel experience across more than 52 countries and five continents, Aaron covers airlines, airports, aviation policy, and the wider travel sector. He is based in Canterbury, New Zealand. His work has been published in Simple Flying and featured by MSN, SAM CHUI Aviation & Travel, EIN News, Pakistan Defence, and Climate Depot. It has come to light that the incident on May 8 at Denver International Airport (DEN) was the sixth airfield security breach at the busy Colorado airport in the last three years. In May, Matthew Mott gained unauthorized access to the secure grounds of the airport before being fatally struck by a Frontier Airlines aircraft during its takeoff roll. The incident, which was declared a suicide, saw the Frontier Airbus A321neo strike the individual, where passengers reported a loud impact. This saw the plane experience an engine malfunction and fire. Passengers and crew were subsequently deplaned and rebooked onto a replacement flight. Mott was declared dead at the scene. Six Airfield Security Breaches In The Last Three Years Credit: Shutterstock As suggested by the Denver Post, there have been a total of six known trespassers at Denver since 2023. While the May 8 incident was the most fatal, other events have shown there has been intentional damage, such as when a man crashed through the perimeter fence gate. Other incidents have seen a man jumping at the fence after crashing his car nearby and being found sitting on the taxiway early in the morning. Another incident was a deranged individual who had climbed the fence and told authorities he was 'walking to Texas,' more than 900 miles (1,440 km) away. While the number may seem alarming, it is evident that these security breaches are happening more frequently, questioning the detection and security parameters at the airport. Fatal incidents, such as the May crash that killed Mott, are somewhat rare, according to Annmarie Heth, an assistant professor of aviation and aerospace sciences at Metropolitan State University of Denver. The advanced security measures at an airport would usually catch trespassers before fatal incidents could happen; however, if someone is intent on getting over or through a fence, they will make it happen. No National Database For Airport Security Breaches Credit: Shutterstock As the Denver Post explained, of the six airport security breaches and eight known trespassers, two have had active arrest warrants at the time of the breach. These have included a failure to appear in Denver court on traffic charges or motor vehicle theft. The report involving Mott's death continues to be under investigation; however, the fatal May incident is now putting the spotlight on how trespassing incidents are reported, as there is no national database. The Federal Aviation Administration (FAA) maintains a record of runway incursions at airports within traffic control towers, which is deemed when planes, vehicles, and people are in the 'wrong place at the wrong time'. FAA incursions include ATC errors where there was not sufficient space between aircraft or obstacles on the runway, pilot actions, or pedestrians or vehicles entering runways or taxiways without appropriate clearance. Of the six incidents, only two of these are documented by DEN at the time they appear in the FAA database, of which there have been a total of 37 incidents involving unauthorized vehicles and pedestrians in the last two decades when looking in the database back to April 2006. What Happens When Someone Breaches An Airport Perimeter Fence? Credit: Shutterstock A breach of the airport perimeter fence usually triggers an immediate multilayered response by security to ensure the protection of the airfield and those within it. This can result in operational disruptions, and should the perpetrator be located, could end in severe legal consequences. Most airports will have sensor activation through Perimeter Intrusion Detection Systems (PIDS), which will flag the breach through fiber-optic fence sensors and ground-based radars or thermal imaging cameras. This will trigger an alarm that is sent to the airport security command center. Security teams will activate and notify local law enforcement to then track down the intruders' location. Following a breach, this can result in airfield operations being halted, and incoming flights may be forced into holding patterns or diverted to other airports, which can then result in costs for airlines and airport operators of hundreds of thousands (maybe even millions) in lost revenue or operational costs.