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mar said:...you know, I'm just some random person on a message board but, you can think of CAS as the "Perfect World" airspeed.
You get IAS after you factor in all the errors present in a particular system.
In other words, CAS is published in a book.
IAS is read on the gauge in real life.
You use CAS for planning but must adjust for IAS.
Old crooked airplanes with bad paint jobs and poor maintenance will never match the books number but CAS is a point of reference that the manufacturer has established.
I'm sure you'll get more information. Standby.
Hence the Bonanza, designed at the right hand of God, has a minimal difference between IAS and CAS. The chart is basically a joke.rumpletumbler said:Calibrated airspeed is indicated airspeed corrected for sloppy engineering and the embracement thereof by the aviation community.