Michael Stringfellow wrote:

Scottsdale Arizona (KSDL) is reportedly the busiest single-runway airport in
the country, with a considerable number of general aviation and business jet
aircraft as well as helicopters.

www.airnav.com

Scottsdale: 506 operations/day

McClellan-Palomar: 761 operations/day

and Palomar is about half as long, so simultaneous
landings with 3000 ft separation isn't as easy.

Mark

P.S. And I used to crawl both ways through sleet for 50 miles to
get to kindergarten... :P Yeah, I know...I should stop whining...