The House struck down aviation safety legislation on Tuesday that would have required planes to carry a type of tracking technology that federal investigators determined could have helped avoid a midair collision over the Potomac River last year that killed 67 people.

National Transportation Safety Board Chair Jennifer Homendy speaks to reporters on Tuesday. (Alex Wong/Getty Images) A year ago Thursday, 67 people died when a military helicopter collided with an American Airlines flight attempting to land at Ronald Reagan Washington National Airport.