wrote:

On Nov 1, 8:55 am, "Bob Gardner" wrote:

On the ground, the pressure inside the airplane and outside of the airplane
are the same...why would you expect the needle to wiggle?

Bob Gardner



Are you indicating it won't? i.e. are you saying in your experience it
does not wiggle?

I expect it to move because that is what I was taught. And I have
flown a lot of these and have never seen it not "wiggle".

I am interested in how I know the knob works. Is looking for the
wiggle a reliable way to tell if the alt. static system is going to
function when I need it. If not how do I know. Should the item have
been squawked or simply noted as an observation.




In the Cessna's I've seen the static port is near the pilots knees. If
this is the case in the plane you're talking about take a look under the
panel at the connection to this port. If you can reach it from the
pilots seat then all you have to do is pull it off the fitting and you
have alternate air.