Hi Vessbot,
When you say: higher IAS at higher altitude. From my undestanding it’s higher cause of compressibility effect? That’s my understandings of why the VLS will increase by 1kt every 1000 feet above FL200 on A320. FCOM says “ Above 20 000 ft, VLS is corrected for Mach effect to maintain a buffet margin of 0.2 g.” But I assume they want to keep it simple. Please correct me if I’m wrong.
Nice video about stall by Airbus:
https://vimeopro.com/easyjetpeople/c...video/95385218
Edit: Oups, Vilas beats me on the video.