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How do pilots afford the cost of their training?
In the simplest of General Aviation Aircraft, speed is measured by a pitot tube and is registered as indicated air speed. Height from ground is not measured, exactly. An altimeter measures outside air pressure and, knowing the local pressure at ground level (such as a local airport), the altimeter can be compensated for this local air pressure at ground level and the distance above seal level is displayed. The pilot must be trained and aware from his/her sectional chart what ground level is and stay a minimum of 500 feet above it! In VFR (visual flight rules), all positions and distances/times are done by visual pilotage and dead reckoning. For mor explanations, do a search for FAA-H-8083-25 on the FAA web site and enjoy reading the Pilot's Handbook of Aeronautical Knowledge. Better yet, look up a flight school and take an introductory flight. Get a start on becoming a pilot today!speed is indicated on the airspeed indicator
hight above ground is determined by the altitude indicator using the current atmospheric pressure input and reading the altitude above sea level and subtracting the height above sea level the ground is below you
distance traveled is determined by the pilot using speed X time = distance. subtract that from the distance from departure to landing(pilot determines this before leaving) gives you distance to go. There is also DME but that is only good if you are flying to/from a VOR/DME or a VORTAC
GPS will give you ALL of this info if you are equipped with it.
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