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In the United States, Class A airspace extends to Flight Level 600 (Pressure Altitude of 60,000).
The diference is simple, the transition altitude is the altitude above sea level at wich the aircraft change from the use of altitude to the use of flight level. When operating above the transition altitude, the aircraft altimeters pressure seting is normally adjusted to the standard pressure setting wich is 1013 millibars in europe, or 29.92 inches of mercury in US, or Canada. There the aircraft altitude will be expressed as a flight level.
18,000 feet MSL
Santa Fe, New Mexico is the highest capital city in the United States with an altitude of 7,199 feet above sea level.
The absolute ceiling
The higher into the atmosphere the plane ascends, the thinner the air is. This is the reason oxygen is required. The United States Parachute Association states oxygen use should begin at 15,000' above ground level.
No. Level flight for an aircraft is not flight in a straight line (vertically) but one that follows the curvature of the earth. It is an arc that maintains the same altitude.
Colorado has the highest average altitude among the states in the US.
Altitude describes an object's position relative to sea level. An object in a position higher than sea level would have a positive altitude, sea level would have an altitude of zero, and any object below sea level would have a negative altitude.
An absolute ceiling is the maximum altitude above sea level at which an aircraft or missile can maintain horizontal flight under normal conditions.
Beech Mtn. in North Carolina is the highest ski resort in the eastern united states at 5506 ft. above sea level, with around 800 ft. vertical descent.
The President of the United States....AKA:Obama