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. That’s the speed your airspeed indicator shows based on ram air pressure in the pitot tube. Here’s why.

True Airspeed

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. Why is that?

True Airspeed

Air Facts

MAY 5, 2025

Flying a single engine airplane, under IFR, in the clouds, in a non-radar environment and without an autopilot, adds a great deal to the pilots work load. With three airplanes, we departed Springfield for Fairfield, Iowa to compete in an NIFA competition against five other schools. This was the situation on Friday, December 1, 1972.

VOR

AV Web

MAY 20, 2025

In fact, the current Airplane Flying Handbook (AFH) contains just three instances of the word, each of which is associated with responding to an in-flight emergency. According to Merriam-Webster, panic implies unreasoning and overmastering fear causing hysterical activity.

Runway

iPad Pilot News

AUGUST 20, 2024

The panel in your airplane shows indicated airspeed (IAS, derived from the pitot tube on the wing), while the iPad shows groundspeed (derived from the GPS in your ADS-B receiver or iPad). In a pressurized airplane you can use the difference to check the status of your pressurization system. Confused yet?

Altimeter

Flight Training Central

APRIL 8, 2024

Which instrument will become inoperative if the pitot tube becomes clogged? The pitot system provides impact pressure for which instrument(s)? Airspeed indicator. Vertical-speed and airspeed indicators. Vertical-speed indicator, airspeed indicator, and altimeter. Vertical speed.

Airplanes