Stuckgear and Pace, thank you for your comments.
It is just possible that AAKEE may have drawn our attention to a point that could possibly have escaped the attention of those engineers who design the hazard lighting on various pinnacles.
Just as Boeing designers may have overlooked certain problems with batteries in Dreamliners (see Tech thread!)
When the duly installed hazaard light has been installed on the tip of the Christmas Tree, or crane, does the possibility exist that it may be covered under certain weather conditions with frost......in the exact conditions that it really needs to be seen.
I am neither an electrical engineer nor a helicopter pilot. Just a pilot who noticing a potential hazard feels duty bound to call it to attention, at the risk of upsetting people. The only time I failed in this duty, to call hazardous flying conditions to the attention of an experienced fellow gliding instructor, on the very next flight the accident happened...fortunatly only the glider was damaged.
Sorry if this upsets you, but....have the electrical engineers considered AAKEE's observations? It is not a dumb question.