In article aqnLb.1278$na.1288@attbi_s04, Newps
wrote:

Robert Moore wrote:


If you have "advised" ATC of a change in TAS, they recompute your ETA.

ATC does no such thing. You tell a controller that you are going 20
knots slower/faster than you put on your flight plan the controller
could not possibly care less. In one ear and out the other.


Don Brown, according to his column today, seems to pay attention to such
details.

http://www.avweb.com/news/columns/186442-1.html