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Thread: is BIRD still reliable during unreliable speed [A320]
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Old 27th Nov 2019, 03:25
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FlightDetent

Only half a speed-brake
 
Join Date: Apr 2003
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Originally Posted by dream747
In cruise, around the area we fly at least, the GPS alt is always about 2000 ft above pressure altitude. Anyone knows the exact reason for this?
Do you mean pressure altitude (QNE reference), or baro-derived altitude (QNH)?
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