Tragic and hard. But on the other points raised i think rather than always pass blame we sometimes need to be accountable for our decisons without blaming someone else.. Ive been flying for 30 years and in regards to flight plans..I am not gadget savvy at all. But with avplan and ozrunways it is far simpler than it has ever been to lodge a flight plan. It literally takes minutes. ATC has almost always been incredible helpful whenever they see a potential risk. I do agree with the raaf taking up way to much airspace when only a pocket is used..and I'm.ex raaf..It's ridiculous to activate a whole block of airspace for one returning c130.
Really sad accident. Could have been a simple mistake in reading lsalt or something.