DozyWannabee - The "charts" you refer to showed the military route, from Cape Hallett to the Byrd Reporting Point. The crew were told, at the briefing, that they would not be flying the military route. But I accept that the material was inconsistent. The prime example is the sample flightplan. This, however, does not save the captain. Once he noted the inconsistency, as he would have done the night before, it was his job to resolve it. Instead, he assumed that the sample flightplan was correct and that the statements at the briefing were not. That can't be anything other than a bad mistake which, I suspect, the captain had begun to appreciate just before he died.