Pilots had reported near-misses with helicopters at Reagan National Airport in the years before the deadly crash

In the three years before the deadly collision between an Army helicopter and an American Airlines flight near Reagan National Airport, at least two other pilots reported near-misses with helicopters while landing at the airport, a CNN review of federal incident reports found.

​ In the three years before the deadly collision between an Army helicopter and an American Airlines flight near Reagan National Airport, at least two other pilots reported near-misses with helicopters while landing at the airport, a CNN review of federal incident reports found. Read More Breaking News, Latest News and Videos | CNN