The study assessed potential damage a drone impact could cause to critical flight surfaces on aircraft such as a Boeing 737 and Learjet 30/40/50.

The Learjet 40 is powered by two Honeywell TFE731 turbofan ... Production ended in 2022, making it the last Learjet model, but not before nearly 170 total aircraft were produced.

In 2023, a Jet Rescue Learjet 35A, an earlier model, was involved in a fatal crash that killed all five crew members aboard. There were no passengers on the flight, which overran a runway.