Blanche wrote:

Ron Lee wrote:
Know how to lean your engine properly at altitude. Summertime density
altitudes can exceed 9000' in the summer.

And that's at ground level!

Thanks for pointing that out! You are correct. We have had people
arrive in CO and not successfully make a take-off. Probably due to
the effects of high density altitude on the runway.

When I took off from Leadville this summer the DA was just over 12,000
feet (on the ground!)

Ron Lee