You may want to check the tray if you have a TruTrak AP installed, I had an issue
with the tray when testing the panel alone. I have a similar drop in pressure
right now but the system matches right up with the GPS speed & altitude so
It doesn't appear to be an issue. I plan on having the pitot/static check completed
soon which may or may not tell me I have a problem. The ballon test works
pretty well for now. Maybe an instrument guru can tell us if there is some allowed
blowby in the instruments themselves. All of my connections are confirmed
not to leak so it's going somewhere. The only place I can think is internally
on the instrument itself.
Rick Sked
N246RS
----- Original Message -----
From: jfrjr@roadrunner.com
To: "Matronics RV-10 list" <RV10-list@matronics.com>
Sent: Thursday, November 19, 2009 3:53:52 PM GMT -08:00 US/Canada Pacific
Subject: Pitot system testing
I have tested my pitot system using the EZ homemade system. Works well with my
indicated AS right on the mark. But I have a slow leak that I can not find.
Loses about 1 knot every 3 to 4 minutes. A little faster loss at higher manometer
pressures. The leaks seems to stop when the manometer pressure gets to about
7.5 inches (105 Knots). Is this acceptable? Any advice on how to find leak--I
have "soapy bubble tested" all connections. Thanks. Jay rowe
