An aviation safety bill seeking to address lessons learned from last year’s midair collision of a jet with an Army helicopter near the nation’s capital is up for a vote Tuesday evening in the House, but key senators and the families of the 67 victims think the bill needs to be strengthened.

The House bill, called the Alert Act, has the backing of key industry groups. The National Transportation Safety Board recently said that the legislation, since amended, now addresses its recommendation to require all aircraft flying around busy airports to have key locator systems that let pilots know more precisely where other aircraft are.

The NTSB has been recommending the new technology systems since 2008, and Chairwoman Jennifer Homendy has said such a system would have prevented the collision of the American Airlines jet and Army Black Hawk helicopter that sent both aircraft plunging into the icy Potomac River.

Two key House committees unanimously advanced the bill last month. The bill is now being brought up for a full House vote under rules that won’t allow any amendments. But victims’ families said they want to make sure the bill has strict timelines to guarantee the reforms will be completed. And they worry the House bill would allow military flights to continue flying without broadcasting their locations on routine training flights and not just secret missions.

“January 29, 2025 made clear what is at stake. The 67 lives lost that day should be honored with an improved system that prevents this from happening again,” the main families group said Tuesday in a new statement. “And the flying public should not have to wait longer than necessary for those protections to be in place.”

Sens. Ted Cruz of Texas, a Republican, and Maria Cantwell of Washington, a Democrat, have said that the Alert Act still needs improvement.

“A warning to my colleagues in the House: the Alert Act would not deliver the safety measures necessary to prevent another midair collision, as it lacks the critical improvements our aviation system needs,” Cruz, the Texas Republican, posted on X ahead of the vote on Tuesday.