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Old December 29th 03, 01:31 PM
Mike Long
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Under the arc at the topmost part of the screen (the arc is the rate
of turn indicator), you will see a small trapezoid. This is the "ball
indicator" and shows skids and slips by moving in the appropriate
direction. It's in a very logical place and is an easy-to-monitor
indication.

This photo cut off for some reason but you can still see the white
reference point for turn rate (top) and the trapezoid below for the
ball, both on the left hand screen very top.

http://www.pbase.com/image/24574624/original

Mike


"John H. Kay" wrote in message ...
Hi.

How do the new glass cockpits (Garmin or Avidyne) indicate rate of turn,
and also whether the plane is slipping or skidding?

I know we can do the simple rule of thumb sum for standard rate turns,
giving the approx. bank angle for the speed we're using, but we're all
trained to check the little wings and the ball for reassurance as part
of the scan in conventionally instrumented aircraft.

On any picture of these new screens, I can't see where there is an
indication of the rate of turn, although I think lack of co-ordination
may manifest itself by another pointer coming away from the main one on
the AI. No article I've read, so far, on these screens mentions these
points.