FAA Wants Permanent Helicopter Restrictions at Reagan Airport - WSJ

The path the American Airlines regional jet took toward Runway 33 required it to turn toward the right and then bank left to line up for its landing. That route crosses over a lane for helicopters at a relatively low altitude.

This is the core problem and nothing else. You’ve got a 200’ altitude restriction on helicopters, but the traffic on short final is going to be bumping into that.

The intersection off of Runway 33 is the problem. So move the routes for greater separation or close 33 permanently.