A safety system installed at the end of a runway helped stop an aircraft from overrunning the runway at Teterboro Airport earlier this month, according to the Federal Aviation Administration.

The FAA said the incident happened on April 6, when a plane avoided going off the end of the runway thanks to the Engineered Materials Arresting System, known as EMAS.

The system consists of a bed of lightweight, crushable concrete placed at the end of certain runways. When an aircraft rolls into the material, it compresses under the weight of the plane, slowing it down and bringing it to a controlled stop.

FAA officials say the system is designed to prevent serious incidents when aircraft overshoot, undershoot or veer off a runway.

EMAS has been installed at more than 70 airports across the United States, including Teterboro Airport, Newark Liberty International Airport and Trenton-Mercer Airport.