Fly the same airspeed and final approach configuration all the time. Legally
you need to interpolate the table and estimate a time to MAP. Also
very handy should the GPS take a dump during final approach.

Realistically .. look at the GPS distance to the airport when you cross
the final approach fix. Subtract the distance to the MAP
and when the GPS says you're there .. go missed if you don't
have the runway.

Don't make it any harder than it needs to be. To me jockeying with
airspeed using a GPS to match a 90k ground speed is kind of silly
when the GPS will tell you right when you're at MAP.




"john smith" wrote in message
...
For those of you using handheld GPS's when you fly IFR:

Do you use the throttle to increase/decrease power to match the ground
speed to the approach speed table so the time is correct to the MAP?

Or,

Do you use the distance to the airport to determine/verify the MAP, even
though the time may not have expired?