Indicated Airspeed Knot Stability 
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
One Mile at a Time
MARCH 20, 2025
At the time of the accident, winds were at an angle of 270 degrees (the runway was at an angle of 230 degrees), at 28 knots, gusting to 35 knots. degrees Less than one second before touchdown, the plane had an indicated airspeed of 134 knots, a ground speed of 111 knots, a bank angle of 7.1
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
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.
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.
Flying Magazine
JUNE 2, 2025
Almost eight times as much fuel is needed to propel an airplane at 400 knots as at 200. Boom aims to alleviate it (assuming the blanket supersonic ban will be rescinded or revised) by flying overland legs boomless at 700 knots and accelerating to 980 knots over oceans.
Aerotime
MARCH 21, 2025
TSB Approach sequence Due to reported wind gusts as the CRJ900 approached Toronto Pearson following a flight from MinneapolisSaint Paul International Airport (MSP) the aircraft was flown at 149 knots. One second later (2.6seconds before touchdown), the EGPWS alert sink rate sounded, indicating a high rate of descent.
Fear of Landing
APRIL 19, 2024
The helicopter turned left to return to the airport, travelling at about 85 knots. The indicated airspeed had fallen below 65 knots and was still decreasing. As the airspeed decayed, the right yaw increased. As the airspeed decayed, the right yaw increased. The pilot reported two miles out.
Expert insights. Personalized for you.
Let's personalize your content