Fox Networks Group President and CEO Tony Vinciquerra told broadcasters Tuesday that the network episode of “Married by America” that generated a record Federal Communications Commission fine for the company’s stations and affiliates was a mistake, but one that wasn’t in violation of FCC indecency regulations.

“That was not our finest moment in television,” Mr. Vinciquerra said during a session at the National Association of Broadcasters convention in Las Vegas. “It was not something we were proud of. But it was not an actionable scene.”