Opps. I am actually referring to specifications of aircraft found in places like brochures and Jane's All The World's Aircraft encyclopedia and information database like Airliners.net Aircraft Data page. Inside these places, there are many speeds listed like Max Cruising Speed, Economical Cruising Speed etc. So I was just wondering are these speed in EAS or TAS.
They are true airspeeds, TAS.
But they are meaningless as the conditions (temperature, ISA...altitude...) are not corelated.
Just an idea for aviation fans.
We are talking about more meaningful data as Mach numbers for high altitude velocities.