"Greg Esres" wrote in message
...
| Can anyone suggest any reasons why you shouldn't use GPS or DME to
| lead your turns when approaching a fix, such as an IAF, on a non-GPS
| approach? (Meaning that you don't wait for complete reversal of the
| nav instrument.)
|
| The AIM has a couple of requirements for a "complete reversal" of the
| TO/FROM indicator, but they aren't instructions about how to fly an
| instrument approach. Regardless, those injunctions may be outdated in
| a GPS world.

I was taught as an Air Force navigator back in the 1970's to always begin my
turn before actually reaching the fix in order to avoid overshooting the
outbound (from the fix) course. I have never heard anything since then that
would suggest a better course of action.