How do you interpret...

"EDR" wrote in message
...

Here is the question:
When you fill in the AIRSPEED box, do you give the actual indicated
airspeed for your cruise power setting?
Or, do you use the "groundspeed", based on winds aloft?


Neither, you use true airspeed.



Further, in these days of RADAR, LORAN and GPS, do you advice ATC of
the groundspeed deviation from the airspeed?


No, you advise of changes in your filed true airspeed.