"Kyle Boatright" wrote in message
...

... I should have mentioned before that the altimeter is close to the
field
elevation when on the ground. Well within VFR limits.

One interesting test would be a low altitude pass down the runway at
cruise power and speed. If I'm 50' above the field and the altimeter shows
field level + 50' (or thereabouts) what would that tell me?

A basic question: If there was a problem with the static system, wouldn't
that cause the same discrepancy in both the altimeter and transponder?
...

That seems likely as far as static sytem design is concerned (e.g. static
port location).

If they differ only in flight, then they probably aren't seeing the same
static source due to kinks and leaks. I assume that both are really
connected to the static source (You have looked, right? No hose has fallen
off?)

Have the encoder output compared to the altimeter while sitting on the
ground - if they are the same, you have a plumbing problem. If they are
different, the problem is in the instruments, eh?

--
Geoff
The Sea Hawk at Wow Way d0t Com
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