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Old 10th Jan 2020, 12:00
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BA46RJ
 
Join Date: Apr 2008
Location: Switzerland
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RNAV/RNP maximum leg distance
Hello,

I am wondering about the reason for the following navigation limitations prescribed for the Airbus A220:

"The individual flight plan leg or between aircraft position and the TO waypoint must not exceed: RNAV-1/RNP-1: 200 nm and RNAV-2/RNP-2: 400nm"

Does anybody have an idea why the length of flight plan leg should be limited to meet these required navigation accuracy values?

Thank you.
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