WASHINGTON (AP) — The Army was one of 28 government agencies authorized to fly helicopters near Ronald Reagan National Airport before its Black Hawk helicopter collided with an American Airlines passenger jet last week, killing 67.

The Federal Aviation Administration is indefinitely reducing flights into Reagan National Airport from 28 to 26 arrivals an hour to address safety concerns after the deadly crash there last week, according to two individuals with knowledge of the decision who spoke on the condition of anonymity because they were not authorized to speak to the media.

The deadly collision at Reagan National has led to questions regarding staffing and air capacity. Are those concerns at Charlotte’s airport?

Salvage crews pull up a part of a Black Hawk helicopter near the site in the Potomac River of a mid-air collision between an American Airlines jet and a Black Hawk helicopter at Ronald Reagan Washington National Airport on Feb 6 in Arlington, Va. (AP)

The FAA told airlines late Wednesday that the reduction from a maximum of 28 to 26 arrivals per hour would reduce risk but also increase average delays from 40 minutes to 50 minut

Top FAA officials pushed to close one of Reagan National Airport's runways following two close calls, multiple sources told CBS News.