The National Transportation Safety Board on Tuesday recommended that helicopter traffic be banned from a four-mile stretch over the Potomac River when flights are landing at Ronald Reagan National Airport.

Federal investigators looking into the cause of the January collision between a passenger jet and an Army helicopter near Washington, D.C., that killed

The NTSB’s preliminary report on the Jan. 29 crash that killed 67 people current helicopter routes allowed around the airport are an ‘intolerable risk to aviation safety.’

The NTSB released a preliminary report on the DCA collision between a plane and helicopter in January while giving urgent recommendations to the FAA.

Investigators issued their preliminary report Tuesday in the probe into the devastating crash between an American Airlines plane and a U.S. Army Black Hawk helicopter.

The National Transportation Safety Board uncovered more than 15,000 “near-miss events” between helicopters and jets at Reagan National airport in just three years leading up to the American Airlines jet and Army helicopter collision that killed 67 people.

Helicopter traffic should be permanently banned near Ronald Reagan Washington National Airport during certain periods to alleviate congestion and avoid a repeat of the deadly midair collision that occurred there in January,

The National Transportation Safety Board is calling for a ban on some helicopter flights near Reagan Airport after an airliner and Army Black Hawk collided in January.