Auckland aviation expert Irene King says the "thugs" who shot down the Malaysian airliner will never get away with claiming they thought their target was military.
"There were civilian aircraft going over there all the time, so to say they thought it could have been military would be just an excuse," she told the Weekend Herald.
"They would be pretty well-versed that it wasn't a military jet.
"They are just absolute criminals and thugs to shoot down something like this - it's a game-changer."
Ms King, a former Aviation Industry Association chief executive, said she understood Malaysia Airlines was one of eight or nine civilian carriers which until yesterday flew over rebel-held eastern Ukraine above a no-fly zone of 32,000ft (about 9754m).