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The airport of Amsterdam (https://en.wikipedia.org/wiki/Amsterdam_Airport_Schiphol https://en.wikipedia.org/wiki/Amsterdam_Airport_Schiphol) is often used in te
by reacweb 9y ago
The airport of Amsterdam (https://en.wikipedia.org/wiki/Amsterdam_Airport_Schiphol https://en.wikipedia.org/wiki/Amsterdam_Airport_Schiphol) is often used in test data because of its negative elevation. It is so well known that I can hardly believe that a certified aircraft has this kind of bugs.
- likpok 9y agoIf you notice, the nav system comes back at -300 MSL, so it's not as simple as "negative numbers don't work". They're inconsistent about negative signs, but I think the nav system fails at -400 MSL. I don't know why it might handle some negative numbers but not others. Maybe there's an overflow somewhere?
- reacweb 9y agoYou are right. There have to be a lower limit.
- moftz 9y agoIt's probably hard limits set to make sure that the GPS doesn't display erroneous data due to a glitch in reception or whatever but as long as you are computing a running average of the position, those hard limits aren't really needed and only serve to create failures for weird edge cases like this.