Density altitude (DA) reduces aircraft performance; it's pressure altitude corrected for nonstandard temperature and humidity. High temperature, humidity, and elevation all contribute to higher DA.

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 ...

The achievement is "one of those unforgettable peaks that define great human and technological adventures," the SolarStratos mission said in a statement.

American Airlines grounded 45 regional flights at Sky Harbor Airport in Phoenix Tuesday as temperatures soared near 120 degrees. A veteran pilot in Dallas agreed to explain why a simple math problem ...