[month-index] [thread-index] [prev] [next] [thread-prev]

teacherjh@aol.comspam.not (Teacherjh) wrote:
> >> The point of the T is to eliminate procedure turns.
>
> What is wrong with procedure turns?

They require a long time to fly, and a lot of protected airspace.

> (and where did that name come from?)

What people commonly call "Instrument Approaches" are more formally
called "Standard Instrument Approach Procedures". A procedure turn is a
course-reversal turn you execute as part of the procedure.

Back in the bad old days when a procedure designer was limited to using
fixes which could be formed from ground-based navaids, and dead
reckoning segments between fixes, procedure turns were a necessary evil.
With GPS, you can put fixes pretty much anywhere thats convenient. You
still need to take terrain into account, but at least you you dont have
to worry about silly things like navaid service volumes and cross-fix
geometries.

View index by [date] [author] [subject]
Previous Message:: Re: WAAS will be running in June - now what for Garmin?
Next Message:: Is ELITE worth the cost of admission?
Previous message in thread:: Re: learning GPS approaches ... Ouch