I could most likely ask this question somewhere else but I thought I'd see what you guys have to say about it. I'm wondering about speed restrictions at high altitude airports like KDEN (5,000+ feet). At a general airport altitude of say 600ft speed must be kept under 250kts until 10,000ft. This is for safety reasons including the probability of high flying birds. Now if the airport is already at 5,000+ feet, I dought a bird would be flying at 15,000ft even though the ground is now only 5,000ft below you. So what is the altitude/speed restriction for airports like Jeffco or KDEN??? Do you have to maintain 250kts all the way up to 15,000ft or is it still 10,000ft? This is just something I've been wondering about for some time and haven't asked anyone (might be in my pilot manual and I'm just too lazy to find it)...Thanks...

We talked about something just like this in my groundschool the other day.In the event that any airspace extends above 10000, the speed restriction changes from 250 kts or less, to subsonic. This is even valid for Class Bravo airports like DFW, whose Bravo airspace extends above 10000. If it isn't DFW's airpsace that extends above 10k then forgive me ;) Airspaces that have speed strictions of something LESS than 250 kts, the speed retriction is waived once you pass 10k, even if you aren't out of that airspace.