Speed Indicator Certification requirements
I know that IAS is different from CAS due to many things.
In Flight Manuals, we can find a table with the correction at different speeds.
But I wondered if there are any certification requirements? To what extent a difference between IAS and CAS is allowed? Is it documented somewhere?
I have another question to ask: is there an official definition of CAS? Where is it documented?
I've always understood that it is
1/2 (Density of the ICAO atmosphere at MSL ) CAS^2 = Total Pressure - Static Pressure
Is it the official definition of what a speed indicator should indicate?