"Duncan McFadyean" wrote:
>
> I too use cockpit static and find it to be as "accurate" as the
Factory wing
> mounted position. That is, it makes no measurable difference to the
> airspeed.
>
> What I have not checked particularly accurately is what difference
it makes
> to Mode C altitude reporting.
>
If the encoder is plumbed to the same static source as the altimeter,
as it should be, then both encoder and altimeter will "read" the
same...but not necessarily accurate altitude.
I recall a couple occasions in the other plane where the static line
sprung a healthy leak, and pulling an air vent open caused the
altimeter to instantly read at least a 100 feet lower. On the bright
side, for "hard" IFR, it would be nice to gain another 100' or so on
minimum descent altitude just by closing the vents. :-)
For VFR, I suppose we could also correct for just a little too slow on
final by just adjusting the vents???
Reg,
Fred F.
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