Look at the spotlight at the nose of an airplane landing. Will explain this in simple terms and not necessarily using the proper aviation terminology.Kyle Field Shade Chaser said:
But the Heli had more than ample
Time to see the plane. It's not like the Heli was "behind" the plane. For a long stretch that Heli to see the CRJ headlight.
All the other lights are 'running lights' that at night blend in with all other artificial lights in the nighttime sky. The 'spotlight' is illuminated only during landing and maybe takeoff. Go look at an observation area at your local airport. You may be able to understand after seeing a couple landings and watch for this 'spotlight'. If you have spatial sense and any sense of dead reckoning you will clue into what I describe. Otherwise, if you don't see how this happens then thank you baby Jesus.
Added the image below that shows the flight path of both aircraft. I am giving the UH60 pilots a huge pass for missing the CRJ700. They should have seen the plane.