# Question: What is flight level 250?

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Flight level means a level of constant atmospheric pressure related to a reference datum of 29.92 inches of mercury. … For example, flight level (FL) 250 represents a barometric altimeter indication of 25,000 feet; FL 255, an indication of 25,500 feet.

## What is flight level 230?

Flight level is the altitude that the controller wants you to fly. … That’s altitude in hundreds of feet. For your example, flight level 230 would be 23,000 feet. They are typically not used below 18,000 ft (FL180) and rarely below 10,000 feet.

## How do you read flight levels?

Flight levels are described by a number, which is the nominal altitude, or pressure altitude, in hundreds of feet, while being a multiple of 500 ft, therefore always ending in 0 or 5. Therefore, a pressure altitude of 32,000 ft (9,800 m) is referred to as “flight level 320”.

## What is flight level 260?

Flight-Level 260 = 26,000 feet above sea-level. Well, 26,000 ft above 1013 (or 29.92 in old money) to be exact.

## What does FL180 mean?

FL180 and FL300 stand for Flight Level 180 and Fight Level 300. Flight levels are spaced 100ft apart on an altimeter that is set to the standard sea level pressure (QNE) of 1013.25 hectopascals or 29.92 inches of Mercury.

## What is the highest flight level?

Question: What is the highest altitude an airplane can fly? Answer: The highest commercial airliner altitude was 60,000 feet by Concorde. The highest military air-breathing engine airplane was the SR-71 — about 90,000 feet. The highest airliner flying today reaches 45,000 feet.

## Why do airplanes use feet?

As it happens, feet is a convenient unit for altitude because 1000 feet is a distance that is safely usable for IFR separation. In metric-using areas, of which there are very few, the “equivalent” is 300 meters. … ATC and Pilots don’t care if it’s feet, meters, or whatzits.

## What are the four forces of flight?

It flies because of four forces. These same four forces help an airplane fly. The four forces are lift, thrust, drag, and weight. As a Frisbee flies through the air, lift holds it up.

## What is the proper phraseology to say the altitude 10000?

“We had understood and read back ‘descending to 10,000. ‘ Phraseology contributed to this incident.” “To correct future problems like this, the altitude should be given in the form of ‘ten thousand’ or ‘eleven thousand’, instead of saying ‘one-zero’, or ‘one-one-thousand. ‘ There is too much of a chance of error.

## How high do planes fly in KM?

Plane facts and figures

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Aircraft type Speed in km/u* Altitude in ft*
Boeing 737 850 35,000
Boeing 777 905 35,000
Boeing 787 Dreamliner 907 40,026
Embraer 190 829 39,370

## How high are planes in the sky?

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.

## What is true altitude?

True Altitude is height above mean sea level (MSL). … It is primarily used in aircraft performance calculations and in high-altitude flight. • Density Altitude is formally defined as “pressure altitude corrected for nonstandard temperature variations.”

## What is a transition level?

The altitude at or below which the vertical position of an aircraft is controlled by reference to altitudes. Transition Level. The lowest flight level available for use above the transition altitude. Transition Layer. The airspace between the transition altitude and the transition level.

## Why do planes fly at 35000 feet?

The “sweet spot” of flying is regarded as between 35,000 and 42,000 feet – too high and the oxygen becomes too sparse to fuel the engines, too low and the air resistance is greater. This optimum height is linked to the usual weight of a commercial jet – that is, heavier planes fly lower, and lighter higher.

## What happens if an airplane flies too high?

When the plane gets too high, there is insufficient oxygen to fuel the engines. “The air is less dense at altitude, so the engine can suck in less and less air per second as it goes higher and at some point the engine can no longer develop sufficient power to climb.” …

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## What flight level means?

Flight Level (FL)

A surface of constant atmosphere pressure which is related to a specific pressure datum, 1013.2hPa, and is separated from other such surfaces by specific pressure intervals. Altitude above sea-level in 100 feet units measured according to a standard atmosphere.