NTSB member Earl Weener said Sunday that investigators only recently learned that Ride the Ducks International issued a warning in 2013 about potential axle failure and recommended a specific repair. But Weener says the boat involved in Seattle crash didn't have the fix.
Weener says it's unclear if the company that owns the vehicle — Ride the Ducks of Seattle — was aware of the warning.
"We're going to be following that up as we continue to gather facts back in Washington, D.C., as well," he said.
