I was also wondering about this. Does the actual G1000 work this way, to automatically switch to mach? I can understand that in a jet, but in a turboprop I would rather it showed knots for TAS. Aerobask just introduced this as an option in its Epic 1000 G1000 version, and I like it a lot. If it is not an option in the real thing I can understand leaving it like this for authenticity's sake. Any thoughts from the devs? Thanks!