F.B.I. Tells Passengers on Alaska Flight They May Have Been Crime Victims

Passengers aboard an Alaska Airlines plane that made an emergency landing after a fuselage panel blew off this year have started to receive letters from the F.B.I. identifying them as possible victims of a crime.

The letters are a sign that a criminal investigation the Justice Department has opened into Boeing, the manufacturer of the 737 Max 9 jet, is ramping up.