Definitions Altitude The vertical distance of an object measured from mean sea level. Flight Level (FL) A surface of constant atmosphere pressure which is ...
Year Date Imperial Metric Aircraft Propulsion
1890 October 8 8 in 20 cm Éole propeller
1903 December 17 10 ft 3 m Wright Flyer propeller
1906 October 23 10 ft 3 m 14‑bis propeller
The flight altitude specified refers to the takeoff point and not to absolute altitude. Given that the point chosen as the takeoff and landing site is 76 m ...
According to USA Today, the common cruising altitude for most commercial airplanes is between 33,000 and 42,000 feet, or between about six and nearly eight miles above sea level. Typically, aircraft fly around 35,000 or 36,000 feet in the air.