Posted for "George Braly" <gwbraly@gami.com>:

 Why would you lean a TSIO-550 engine at a field with 5 or 10K density
altitude?
 
 The turbo at redline MP and RPM makes more HP at 5000 feet and 10,000 feet
than it does at sea level.
 
 Not a good time to lean it.
 
 There is an NTSB report on this subject.  A crash at Pagosa Springs from some
years ago. P210 leaned on takeoff.  Not a pretty picture.
 
 Regards,  George
 

"""
 Walter:
 
 Any thoughts about leaning the TSIO 550 engine for high altitude
 take-offs.  (5000' +)
 
 Thanks,  Bill Hogarty
"""