Am I right in thinking the CRJ is in a left banking attitude? The chopper is approaching from the right which would put it 'below' the horizontal deck level of the CRJ? If so, the AA crew would not be able to see the chopper at all. The helicopter pilots would only be able to see the lower anti col beacon and maybe the navy lights, logo lights if fitted/working would not highlight the fin at that angle, are cabin lights still being dimmed at night for take off and landing? So windows not lit up either?
I'm astonished that civil passenger carrying aircraft are operating in such an environment.
Incredibly sad and ultimately avoidable incident.
RIP.