"Peter Duniho" wrote in message ...
The main problem is that, for some reason, pilots who
are introduced to turbocharged aircraft are often not told about the need to
avoid full-rich mixture settings at high density altitudes. This was true
of me (I found out myself the hard way...only took two high altitude
landings for me to figure it out though ), and it's apparently true of
other pilots as well.


This is not isolated to pilots of turbocharged aircraft. Every
summer I see flatland pilots in the high country blindly following a
"mixture - rich" item on a landing checklist and killing the engine on
rollout. A go-around attempt will usually result in a belch of black
smoke and a close encounter with pine trees if they're lucky, bent
metal if they're not.

John Galban=====N4BQ (PA28-180)