"The CO" wrote in message =
...
=20
=20
Well the only tiny grain of truth in that statement is that a static
port can be occluded by a
foreign object. On the ground this can be something like an insect
setting up housekeeping
in it, in flight ice is probably the biggest risk factor. Since loss =
of
the static port will bugger up
3 basic flight instruments (altimeter, ASI and VSI) this is =
non-trivial.
=20
The CO
=20
=20
Well, let me tell you of the time my airplane was released from an =
annual
inspection with the static line open to the air in my pressurized cabin.
Since I'm cautious, I'd waited for MVFR conditions before launching.

My cabin began to pressurize just as I entered the base of the stratus,
and my rate of climb suddenly showed zero, among other annoying signs.
I continued my climb by maintaining attitude until I popped out on top,
and asked for an ILS approach and return for landing.
An airliner ahead of me called out the tops of the clouds, so I had
a pretty good idea of my altitude before intercepting the ILS.

If I hadn't been so close to the airport, I'd probably have thought =
about
dumping pressurization to see if the altimetry would come back,
but in this case it was easy just to return and let the mechanic
re-connect the hose. He was pretty embarrassed.
---JRC---