Indicated airspeed (IAS) is the airspeed of an aircraft as measured by its pitot-static system and displayed by the airspeed indicator (ASI). This is the...

difficult to measure the exact airspeed of the aircraft (true airspeed), but other measures of airspeed, such as indicated airspeed and Mach number give useful...

for these purposes the indicated airspeed – IAS or KIAS (knots indicated airspeed) – is used. However, since indicated airspeed only shows true speed through...

The airspeed indicator (ASI) or airspeed gauge is a flight instrument indicating the airspeed of an aircraft in kilometres per hour (km/h), knots (kn...

In aviation, calibrated airspeed (CAS) is indicated airspeed corrected for instrument and position error. When flying at sea level under International...

equivalent airspeed (EAS) is calibrated airspeed (CAS) corrected for the compressibility of air at a non-trivial Mach number. It is also the airspeed at sea...

measurements of airspeed: TAS is "knots true airspeed", the airspeed of an aircraft relative to undisturbed air KIAS is "knots indicated airspeed", the speed...

instruments also show indicated airspeed. In general aviation aircraft, the most commonly used and most safety-critical airspeeds are displayed as color-coded...

altitude increases, its true airspeed is progressively greater than its indicated airspeed. For example, the indicated airspeed at which an aircraft stalls...

The airspeed indicator works by measuring the ram-air pressure in the aircraft's pitot tube relative to the ambient static pressure. The indicated airspeed...

Calibrated airspeed (CAS), indicated airspeed, corrected for instrument error and position error Equivalent airspeed (EAS), the airspeed at sea level...

messages, via the ACARS, indicating disagreement in the indicated airspeed readings. A spokesperson for the BEA claimed, "the airspeed of the aircraft was...

referencing one's indicated airspeed fed by the pressure from a pitot tube. This measurement is converted to an equivalent airspeed based upon known atmospheric...

International Civil Aviation Organization (ICAO) classifies aircraft by their indicated airspeed at runway threshold (Vat,: II-5-1-3  also known as approach speed...

had reached 230 knots (260 mph; 430 km/h) indicated airspeed, but neither engine core (N2) ever indicated any rotation during the entire descent. Since...

between indicated airspeed and calibrated airspeed. In some low-speed aircraft, the position error is shown as the difference between indicated airspeed and...

to the low indicated airspeed which can be sustained: although the true airspeed at an altitude is typically greater than indicated airspeed (IAS), the...

needed] The true airspeed associated with a given indicated airspeed increases with altitude. Below the tropopause, the true airspeed associated with a...

the aircraft's airfoils, and the relation between its indicated airspeed (IAS) and its true airspeed (TAS), are also subject to air-density changes. Furthermore...

slat position, as applicable), and is provided to the flight crew as indicated airspeed. Operations with transport category aircraft employ the concept of...

determine the indicated airspeed of the aircraft. The diaphragm arrangement described above is typically contained within the airspeed indicator, which...

An air speed record is the highest airspeed attained by an aircraft of a particular class. The rules for all official aviation records are defined by Fédération...

true airspeed Stall speed: 40 kn (46 mph, 74 km/h) full flaps, indicated airspeed Never exceed speed: 135 kn (155 mph, 250 km/h) indicated airspeed Service...

designated airspeeds relating to optimum rates of ascent, the two most important of these are VX and VY. VX is the indicated forward airspeed for best angle...

The indicated airspeed for this condition changes with ambient temperature, which in turn changes with altitude. Therefore, indicated airspeed is not...

angle, and to keep the aircraft's speed below its maximum permissible indicated airspeed in a vertical dive. Most modern combat aircraft are equipped with...

speed at that altitude can be calculated and presented to the pilot. Indicated airspeed, a measure of the relative wind over the aircraft's surfaces, is a...

attained a maximum height above the runway of 85 feet (26 m) with its indicated airspeed decreasing, before commencing to settle back towards the ground. Twelve...

true airspeed Stall speed: 48 kn (55 mph, 89 km/h) full flaps, indicated airspeed Never exceed speed: 155 kn (178 mph, 287 km/h) indicated airspeed Range:...

retardation of thrust levers, led to a 20 knots (37 km/h; 23 mph) loss in indicated airspeed just prior to touchdown. Due to the severe weather conditions forecast...