In rec.aviation.piloting TheSmokingGnu wrote:
wrote:
If the drift is sufficient ( 2 or 3 degrees, I forget the number; it's
in the AIM ) they are supposed to be recalibrated.
FAR 91.171, VOR Equipment checks.
4 degree variation if using a VOT or other ground-based testing
sites/equipment.
6 degrees if using a designated airborne test point, or using a dead
reckoning technique.
No more than 4 degrees variation between the radios of a dual VOR setup.
Nothing about the accuracy of the VOR station itself, though. If they're
really bad, I would file a report with the nearest FSDO.
TheSmokingGnu
I thought I saw somewhere in there a spec for the VOR station drift.
Maybe it was somewhere else; so many regs, circulars, advisory letters,
so little time...
I know there are limits somewhere.
--
Jim Pennino
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