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Started by: Phil ChettPhil Chett
On: 1227125669|%e %b %Y, %H:%M %Z|agohover
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Article on : Differences between Pressure and GPS Altitude
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Phil ChettPhil Chett 1227125669|%e %b %Y, %H:%M %Z|agohover

Using GPS to police altitude limits has some potential pitfalls for competitors and organisers. The height recorded by a GPS can be up to 10% higher than the pressure altitude shown on an altimeter. So a GPS may suggest that a pilot has infringed an airspace ceiling when actually he hasn’t.

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