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Old 25th Aug 2015, 20:16
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mustangsally
 
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Thumbs up This may help
www.tscm.com/mach-as.pdf


When holding a constant Mach as altitude increases KIAS decreases. I don't have the charts at my finger tips, but Mach 0.84 at FL250 is about 340 KIAS. At FL350 M0.84 is about 280 KIAS.


Hope this helps.
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