Table of Contents

- 1 What is used to measure the height at which an Aeroplane is flying?
- 2 Which instrument is used to measure height of aircraft above ground?
- 3 How high can a helicopter go?
- 4 How is altitude calculated?
- 5 How do you calculate AGL?
- 6 How do you calculate the height of an aircraft?
- 7 What is the average altitude of a commercial airplane?

## What is used to measure the height at which an Aeroplane is flying?

Answer: Pressure altimeter is the instrument used to measure the height of flying planes.

**How tall is a plane from the ground?**

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.

### Which instrument is used to measure height of aircraft above ground?

Altimeters

An altimeter is a device that measures altitude, the distance of a point above sea level. Altimeters are important navigation instruments for aircraft and spacecraft pilots who monitor their height above the Earth’s surface.

**How high is ground level?**

AGL, or above ground level, is the distance that an object is above the ground below it. For example, if you are standing on the roof of a building that is 100 feet tall, you are at 100 feet AGL. MSL, or mean sea level, refers to the distance an object is above sea level.

## How high can a helicopter go?

Turbine-engined helicopters can reach around 25,000 feet. But the maximum height at which a helicopter can hover is much lower – a high performance helicopter like the Agusta A109E can hover at 10,400 feet.

**How is elevation calculated?**

An easy-to-remember equation for finding change in elevation as a decimal is “rise over run,” meaning the rise (the change in vertical distance) divided by the run (the change in horizontal distance). As an example, let’s say the rise is 2 and the run is 6. So, you’d take 2 over 6 (or 2/6) to get .

### How is altitude calculated?

Altitude, like elevation, is the distance above sea level. In fact, aviators and mountaineers can measure their altitude by measuring the air pressure around them. This is called indicated altitude, and is measured by an instrument called an altimeter. As altitude rises, air pressure drops.

**How does the altimeter measure altitude?**

An altimeter is a device that measures altitude—a location’s distance above sea level. Most altimeters are barometric, meaning they measure altitude by calculating the location’s air pressure. They determine altitude by measuring air pressure. As altitude increases, air pressure decreases.

## How do you calculate AGL?

Sectional charts normally show both mean sea level (MSL) and above ground level (AGL) heights for towers. Next to the tower, you’ll see two numbers. The top number is the height in MSL and the bottom number — in parentheses — is the height of the tower in AGL.

**How can you tell how big a plane is overhead?**

If the aircraft is directly overhead, you can hold your thumb outstretched and compare it to the apparent size of the plane. Your thumb subtends an angle of roughly 1° (in other words, covers 1° of your field of view).

### How do you calculate the height of an aircraft?

Then using the angle the wings subtend, and some simple trigonometry, you can calculate the height. The formal lettering on the aircraft (for instance the registration number) is a standard size. You can estimate the height by the appearance of the lettering.

**How high do planes fly in the air?**

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.

## What is the average altitude of a commercial airplane?

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. To put that in perspective, the peak of Mount Everest measures at 29,029 feet.