The National Transportation Safety Board "urgently recommended" Tuesday that the Federal Aviation Administration permanently prohibit helicopter traffic near Reagan National Airport when two runways are in use following the deadliest aviation disaster in the U.

The NTSB is calling for a strict ban on helicopter flights near Reagan National Airport after a deadly midair collision killed 67 people. Chair Jennifer Homendy urged the FAA to act immediately, citing an "intolerable risk" of collisions.

More than a month after an American Airlines plane and a Black Hawk helicopter collided near Reagan National Airport (DCA), killing 67 people, officials with the National Transportation Safety Board (NTSB) are calling for immediate changes to helicopter routes around DCA because they said it poses “an intolerable risk