Originally Posted by Ian W
No the function is as it says there for Flight Level Change
- while I sniff pedantry, I am prepared to bow to your expert knowledge of aircraft systems, but would expect FLCH to be for ANY altitude change, above or below MSA (especially when in North America - do you serioisly believe it cannoit be used below18,000'?) - just as 'LVLCHG' in the 737 is for all 'vertical positioning' (if you prefer that) and I believe the AB family refer to 'Altitude' to encompass above and below TA.