Thomas Borchert wrote:

Danny,


I have been told that the heading
information from a GPS is good enough to do the function of a turn and bank
and allow emergency operations without having a visual horizon reference.



Aviation Consumer has tried flying only with reference to the instruments page
on a Garmin 296 and 496. That page emulates the standard six-pack derived from
GPS data. They say it worked. They also said the 5 Hz vs 1 Hz update rate of
the 496 improves the concept a lot.




I think that's the crucial part. If the update rate is too slow it's
almost worse than nothing.