On 20 Aug 2003 04:33:13 -0700, Snowbird wrote:

[snip]

How to do so practically? We use time and our knowledge of our plane's
approximate groundspeed. One centers a radial, then turns the OBS to
deflect the needle 10 degrees, notes the time, and flies until the
needle centers. Note the time again.

[double-snip]

I mention it because I was taught this technique as a student, but
many don't seem to be.

FWIW, this technique is the subject of a couple of questions in the
IFR written test question bank. It's an interesting academic exercise,
but I can't see much practical use for it, especially IFR.


Morris