On 5/17/2005 16:54, A Lieberman wrote:

On Tue, 17 May 2005 15:55:42 -0700, Mark Hansen wrote:

Works, or appears to work. If it were not connected to the static source,
wouldn't it simply vent to the area behind the panel?

Mark,

I plan to fly tomorrow to the practice area. What I am planning to do is
time the climb rate to see if it is registering correctly (I.E climb or
descend at 500 per minute).

I flew last week in IMC doing some ILS approaches in actual conditions and
I truly did not notice anything unusual about the VSI.

If the VSI is vented to the cabin, you won't notice much of a difference.
Unless the cabin is pressurized, the air pressure will be slightly lower
than the actual static air pressure (from outside the cabin). However, when
you climb, the VSI will still show a climb, and at virtually the proper
rate.

Using the cabin air pressure as an "alternate" static source for the VSI
is fine in an emergency.


Like I said, I don't know anything about systems, other then when something
doesn't work, to get it to the repair shop and get it fixed.

Even thought you don't notice a problem, given that someone found that it is
not connected up properly, you should take this as a problem that needs
to be fixed ;-)


As far as I knew before today, everything worked perfectly, so I was not
expecting any problems.

Allen


--
Mark Hansen, PP-ASEL, Instrument Student
Sacramento, CA