The Federal Aviation Authority is changing rules on how airlines can operate jets that are not equipped with safety features that would help passengers survive an impact.
The FAA on Wednesday released its first interim rule on hot-wire flights, which is designed to make sure the planes can be flown safely.
The rule sets limits on how far an aircraft can go without slowing down and how fast it can go.
The agency said it’s taking the new rules into account when it evaluates whether to issue an FAA permit to a hot-flier.
The rule is a response to the July 16 accident in which a Southwest Airlines flight from New York to Dallas left New York without the necessary safety features and hit a highway.
The FAA said it was investigating the crash.
Hot-wire flying is a risky practice in which pilots and other crew members ride jet engines and fly the plane without being on the ground.
Pilots often climb into the back of the plane, using a canopy that covers the pilots face and neck.
Pilotas can then sit in the back seat and fly, sometimes to a stop.
The hot-flying industry has grown since the 1950s, with more than 200 aircraft in operation.
The industry is now worth $50 billion and employs more than 2 million people.