Unfortunately it always has been part of the code that it goes off at 18,000ft, an annoying problem but bearable I guess. If you've ever not changed it by the time you pass 18,000ft (when climbing) in FS9 you get a nice warning saying you need to reset to 29.92. Not sure if FSX is the same, haven't really tried that yet. Andy _____ From: FrankTurley@xxxxxxx [mailto:FrankTurley@xxxxxxx] Sent: 14 November 2006 09:10 To: jhb_airlines@xxxxxxxxxxxxx Subject: [jhb_airlines] A question of altitude My brain woke up this morning with a wizzo idea to help decrepit pilots like me, why not a cockpit indicator which warned you that you were passing through the transistion level and need to reset the altitude gauge? I searched through the FSX variable list looking for something like transition level, but failed. I then had a quick hunt through the FSX events list, and found - Barometric - Syncs altimeter setting to sea level pressure, or 29.92 if above 18,000 feet. From that I assume that the transition level is hard wired into the code at 18,000 feet. OK for the USA I guess. Frank T.