On Jul 29, 4:01 pm, Marc Ramsey wrote:
The SN10 also does a pretty good job at this (mine is better, of
course), what's the issue?



The issue is that the the altimeter setting is usually unknown at the
time of landing but it is almost certainly different for the altimeter
setting at takeoff time. The altmeter error on landing, if still
using the takeoff altimeter setting, may exceed 100 feet even if there
is no significant weather change.

Andy