PPRuNe Forums - View Single Post - reasons behind speed control

11th Jan 2012, 12:08

#7 (permalink)

TC_Ukraine

Join Date: Nov 2008

Location: Ukraine

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hi, everyone.
Question: Why the aircraft's speed is expressed in Mach numbers above exactly FL 250? I mean not 220,230, 260 etc. How was it calculated?
And yes, I tried to google it. Coundn't find answer

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