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Old May 19th 08, 11:03 PM posted to rec.aviation.piloting,rec.aviation.student
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Default Mxsmanic , IFR sensations, and some other stuff

On May 19, 3:57*pm, Dudley Henriques wrote:

That lack of feeling flagged the HI which made me go to secondary
instruments. *


For capturing the ILS below the glide slope, add power, no seat of the
pants feeling, flags me to check engine instrumentation or outside
temp probe for icing. *


There is only one golden rule really on physical sensation. No matter
how much you feel it might be useful to use it as a cue that causes you
to act on it......DON'T! Expand the scan instead.


Dudley,

I snipped out the extraneous part of my post to I think bring home
exactly what you are saying.

In my paragraphs, am I not saying the very same thing (expanding my
scan?) based on an absence or contradictory feeling?

Ever post I have put, I have emphasized, that I went to secondary
instrumentation.

My action on a errant feeling was a cue to expand my scan when
something didn't feel right.

Again, NONE OF THE ABOVE applies to leans or inner ear effects, the
FAA covers that very well.

I am talking action / reaction based on the AI indication of added
power or a yank on the yoke (display of pitch up), and it lacked in
the seat of my pants. If one uses the corresponding and EXPECTED
feeling, this will make an instrument pilot just that more intimate
with the environment they sit in. If you don't get that expected
feeling, time to cross check what you are looking at.

I think that I am talking out my scenario as if I am in the plane,
just not saying as eloquently as you are about expanding my
scan? :-))))

I am expanding it by going to secondary instrumentation to verify the
accuracy of my primary (in this case the AI) and saw uh uh, looks to
me AI needs to be question based on VSI and airspeed. (OAT was a cozy
65 degrees so icing wasn't even a remote consideration). Saw my
ground track ticking off degrees on the GPS, yet my DG was rock solid
steady. Two big signals right off the bat said vacuum and easy to
diagnose. All because I didn't feel the g's in my britches and all
diagnosed within 15 to 20 seconds.

On my airplane status.....

A&P pulled everything out on the vacuum system and sees nothing wrong,
but DG did ghost permanently when I went to take a test flight
yesterday, so new DG is coming (under warranty). He said maybe some
"trash" got in the lines causing the instrument air gauge to show
abnormally high. I will test fly the bird tomorrow after DG is
installed (obviously in VMC conditions) to verify that all is
healthy.

Will put the DG to it's test with a few steep turns.in both
directions ;-) Always nice to have an excuse to do some VFR airwork!