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Old 23rd June 2011 | 06:27
  #17 (permalink)  
172_driver
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: CPL
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From: Between a rock and a hard place
What limit are you asking for then?

FAA Practical Test Standards: +/- 1 nm
PANS-OPS protected area: +/- 2,5 nm

So if you drift 1,5 nm off the arc your flying may be sloppy, but you are still within the protected area for the procedure.
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