Until now, U.S. commercial airliners had gone nearly two and a half years since any passengers died in a crash.
The last time that happened was in the crash of Comair Flight 5191 at Blue Grass Airport.
That span was the longest since the dawn of the jet age that no passengers had died in a U.S. commercial plane crash.
49 people on board Flight 5191 died in August 2006 when the plane took off from the wrong runway.
There was one survivor.