did they not do it? there is no evidence on the cockpit recorder of the noise you would have heard as they would have tried to do it? but again, we don t know how he locked them out? there is a whole load of issues we ll never know about this. unfortunately, the core fact remains, that a very sick man was allowed to fly an aircraft and that will be the subject of the investigation going forward. and of course i should have said not just suicide but mass murder as well. would anybody on board have been able to feel as all either the pilot or the passengers that he was testing these things out? no. and this is the reason. when he set the auto pilot altitude to 100, the plane was already descending. it doesn t matter if you asked it to descend to 1,000 or 100