Altimeter Indicated Airspeed Pitot Tube 
iPad Pilot News
AUGUST 20, 2024
Airspeed and altitude differences Consider speed first. 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). Here’s a somewhat geeky dive into the details. Confused yet?
Flight Training Central
APRIL 8, 2024
Airspeed only. Airspeed and altimeter. Airspeed, altimeter, and vertical speed. If a flight is made from an area of low pressure into an area of high pressure without the altimeter setting being adjusted, the altimeter will indicate lower than the actual altitude above sea level. 15,940 feet.
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.
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