Discrepancies

[rocky289]

Have found a few variations between Plan-G & AIP NZ airfield data.
ie runway length, elevation & bearing.
I am assuming the AIP figures would be the more accurate.

[Ian Warren]

AIP would be smack on the nose, all those little troublesome ups and downs, this ways and that are your FS limitations.

[AlisterC]

If you are flying in the real world, I would use AIP. If you are flying in the sim, I would use PlanG, which has probably built it's data from in game. Let's not forget FSX has been out a long time now. It's as much a time machine as it is a simulator.