Map: A look at helicopter traffic patterns over D.C.
The airspace above Reagan National Airport, where a commercial plane collided with an Army helicopter this week, has become increasingly congested with air traffic, including helicopters.
![Map: A look at helicopter traffic patterns over D.C.](https://npr.brightspotcdn.com/dims3/default/strip/false/crop/1925x1083+64+208/resize/1400/quality/100/format/png/?url=http%3A%2F%2Fnpr-brightspot.s3.amazonaws.com%2F2f%2F13%2F4d420f1741968fb15ff81e6f9b1b%2F8mmax-at-the-time-of-the-crash-the-helicopter-was-traveling-down-a-faa-approved-route-copy.png)
The airspace above Reagan National Airport, where a commercial plane collided with an Army helicopter this week, has become increasingly congested with air traffic, including helicopters.