kevmor wrote:
When using a GPS in leg mode going to the IAF for a procedure turn, when
you switch it to OBS mode, don't you loose your navigation (except for
the moving map)? You don't want to wait too long to switch to OBS, or
else it may sequence to the next waypoint when you get to the IAF, but
the sooner you do it, the sooner your navigating with just the moving
map, aren't you?

If you have a C146a navigator you don't have to do any of this switching
nonsense.