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No, the 500 warning has nothing to do with the airport, it is simply triggered by the aircraft being 500 feet above SL.
TAWS can be turned off, and, come to that, needs to be installed in the first place. It is therefore possible that neither the 500 foot annuciation or any other is made. With the G1000 set up the warnings are extensive, including "sink rate", and "obstacle, obstacle, pull up, pull up".
I accept your point about the level button except it is such an obvious feature on the aircraft and sufficiently well billed in the advertising material that I would be surprised if many pilots flying this particular aircraft were not aware of the button. However for it to be any use the pilot does need to recognise that he has lost control.
Last edited by Fuji Abound; 18th Nov 2008 at 13:26.