ok FAR experts
https://www.ecfr.gov/current/title-1...section-91.117
Departing IFR out of LAX. Climbing thru 5000. Crossing 5000 feet, Departure says "Maintain
280 (knots) or better, climb and maintain 17,000"
Since this is an "ATC directive", you are approved to fly 280 below 10,000, or do you wait until 10,000 before selecting 280?
I say do it when ATC says to do it, since he may be seeing soon-to-merge electronic dots on his radar scope
Thanks