Pressure altitude is the height of an aircraft above a theoretical standard datum plane, corresponding to an altimeter setting of 29.92 inHg, and is used as a baseline for weather-related calculations ...

Altitude and barometric pressure are closely related. As altitude increases, barometric pressure decreases, or stated another way, barometric pressure is inversely proportional to altitude. This is ...

Although density altitude does reduce performance of an aircraft, it doesn't automatically keep you on the ground. [Credit: Shutterstock] A student pilot mistakenly believed any reported density ...