A congressional hearing has reinforced the idea that the January collision between an American Airlines passenger jet and an Army helicopter that killed all 67 people aboard both aircraft could have been prevented.

A Senate hearing following the midair collision over the Potomac that killed 67 people exposed major oversight failures and urged urgent reforms.

A congressional hearing Thursday reinforced the idea that the January midair collision between an American Airlines passenger jet and an Army helicopter that killed all 67 people aboard both aircraft could have been prevented.