Zoomy wrote:
Judging by a few comments, it seems some would not lean the mixture at a high elevation airport to obtain max power.
Most pilots here in AU would not experience a high elevation field in their lifetime, so if and when you are there, leaning the mixture might be the last thing on your mind. For a lot of pilots around the Rocky Mountains USA, it would be second nature.
If you were departing from say, Albuquerque New Mexico (KABQ) which is 5,352' AGL you might be wondering why the aircraft is struggling to climb, or perhaps Leadville (aptly named) at 9,927' AGL where most normally aspirated aircraft would need a JATO to get airborne.