Indicated Airspeed Knot Pitot Tube 
Pilot Institute
JULY 11, 2025
Why don’t they use Indicated Airspeed just like the pilots who fly slower aircraft? Key Takeaways Mach number is a dimensionless ratio of true airspeed to local speed of sound. In terms of a formula, you can write it as: Mach number (M)= True Airspeed (TAS) / Speed of Sound (a) This means Mach 1 is the speed of sound, Mach 0.5
Pilot Institute
NOVEMBER 16, 2024
If you’re aiming to get comfortable with managing both airspeed and altitude in flight, you’ll need to understand the difference between indicated airspeed (IAS) and true airspeed (TAS). Key Takeaways Airspeed and altitude are directly linked to each other throughout different phases of your flight. miles per hour.
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Air Facts
MAY 5, 2025
This particular 172 normally cruised at 120 mph indicated airspeed, but with the ice it would barely do 90 mph and that required full throttle! The general prognosis indicated no icing in the clouds, no turbulence and a quartering headwind from the west resulting in a mere five knots of headwind component.
Pilot's Life Blog
APRIL 9, 2024
In short, an airspeed indicator measures the ram pressure and compares it to static pressure to determine how fast a plane is moving. Moving air from outside feeds into the pitot tubes and fills a pressure diaphragm. True airspeed (TAS) is the difference between the indicated airspeed and actual speed.
AeroSavvy
OCTOBER 26, 2020
Location of the Honeywell SI-800 airspeed indicator on a 757/767 panel Inputs All airspeed indicators need two air inputs. Ram air from a pitot tube and static (undisturbed) outside air from a static port, usually a hole on the side of the fuselage. Flying faster than V MO can cause structural damage.
Expert insights. Personalized for you.
Let's personalize your content