When Congress pushed ahead last year with adding 10 new daily flights to Washington D.C.’s Reagan National Airport, the Federal Aviation Administration had data showing an unnerving number of near misses in the already-crowded skies — something lawmakers apparently did not know.

The US aviation regulator said Friday it has ordered stricter safety around Washington's Ronald Reagan airport after a devastating collision between a passenger jet and a military helicopter. The Federal Aviation Administration also closed part of a corridor near Ronald Reagan National Airport that the military helicopter was using when it collided with the Bombardier CRJ-700 jet.

The Federal Aviation Administration (FAA) on Friday announced it would permanently restrict “non-essential” helicopter operations around Washington, D.C.’s Ronald Reagan Washington National Airport (DCA),

FAA makes sweeping changes at one of the nation’s busiest airports after the National Transportation Safety Board urged “immediate action.”

According to a report from Reuters, the Federal Aviation Administration said on Friday that it is imposing permanent restrictions on non-essential helicopter operations around Washington’s Reagan National Airport and eliminating helicopter and passenger jet mixed traffic.