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How do pilots determine cruising altitude?
Answer: The flight operator files a requested altitude, usually done by the flight dispatcher, based on performance and economics. Air traffic control reviews the flight plan, checking for conflicts. They issue the cruising altitude based on the requested flight plan and other traffic.
How do planes know their altitude?
A radar altimeter measures altitude more directly, using the time taken for a radio signal to reflect from the surface back to the aircraft. The radar altimeter is used to measure height above ground level during landing in commercial and military aircraft.
What is the typical cruising altitude for aircraft?
between 31,000 and 38,000 feet
Commercial aircraft typically fly between 31,000 and 38,000 feet — about 5.9 to 7.2 miles — high and usually reach their cruising altitudes in the first 10 minutes of a flight, according to Beckman. Planes can fly much higher than this altitude, but that can present safety issues.
Do you know what the cruising altitude of an airplane is?
They don’t — at least, not all the time. Even though it does always seem like the captain says, “We’ve reached our cruising altitude of 36,000ft” before switching off the seat belt sign. So what determines the altitude at which your flight cruises?
What’s the average altitude of a commercial plane?
A commercial aircraft on a so-called IFR flight, i.e. all passenger planes, will cruise eastbound at so-called “odd” flight levels. That means for example at 33,000 feet (which pilots and air traffic control will refer to as FL330) or 35,000 feet (FL350) in increments of 2,000 feet.
How tall does a plane have to be to fly above the ground?
Modern systems allow planes to pass as little as 1,000 feet above or below each other. Curiously, the altitude displayed at the flight levels and on your seatback display is not the actual, true altitude above the ground. Planes flying below 18,000 feet set their altimeter to a reported pressure setting.
Why do planes fly at an odd altitude?
Planes flying eastward (including northeast and southeast) will fly at odd altitudes (i.e. 35,000 feet) and all other directions will fly at even altitudes. Routes going in the same direction are also often planned so that planes are 1,000 feet above or below each other to avoid a collision.