Originally Posted by
Locked door
My understanding is that the Airboss is responsible for preventing the accident before any aircraft take off by creating choreography and a display sequence that ensures separation and makes an accident (almost) impossible.
Yes, but is still depending on proper cooperation/compliance from the pilots flying the aircrafts.
Originally Posted by
Locked door
If the accident aircraft were performing a permitted manoeuvre and were both their permitted locations then the Airboss shares some if not most of the responsibility for the accident.
Provided sufficient 4D separation is build in, that would take the airboss of the hook. Don't forget EVERY maneuver with more than one aircraft around the same ground infrastructure will ALWAYS have crossing flight-paths. It just needs to have at least 1 of the 4D parameters to have sufficient separation. If one parameter gets a little "close-by", add another one to increase separation.
Originally Posted by
Locked door
No pilot can keep full SA with respect to all the other aircraft in that busy display. Separation should have been ensured with differing altitudes and display lines and no crossover permitted.
A very sad set of events.
ATB
Yep & Yep, though, see my previous remark about the logic around this subject.