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.

Sen. Jerry Moran (R-Kan.) convened a hearing on the NTSB’s preliminary report on the midair collision in Washington this winter.

The Senate Commerce Committee is holding a hearing Thursday about the collision between an Army helicopter and a passenger jet that killed 67 people. Witnesses include National Transportation Safety Board chair Jennifer Homendy,