Air Florida Flight 90: 43 years ago, another airline crash in the Potomac. What to know.
The 1982 crash happened moments after takeoff in icy conditions in roughly the same place as Wednesday's collision between a jet and Army helicopter.
A history of commercial plane crashes and what we learned from them
Collisions like the one between an American Airlines plane and a helicopter over the Potomac River in D.C. this week have led to changes in the way we travel.