The American Airlines plane and helicopter collision is sparking memories of the deadly 1982 Potomac River crash. Forty-three years ago, a plane crashed into the 14th Street Bridge 30 seconds after taking off from Ronald Reagan Washington National Airport during icy conditions.

Officials say the conditions of the Potomac River are complicating recovery efforts of the bodies of the 67 presumed dead in a mid-air collision between American Airlines flight 5342 from Wichita and a military Black Hawk helicopter.