What is the standard pressure for the ISA?

The standard pressure for the International Standard Atmosphere (ISA) is defined as 1013.25 hPa, which is equivalent to 29.92 inches of mercury. This value is an essential reference point in aviation and meteorology, as it allows for standardization in various calculations related to altitude, air density, and aircraft performance. It represents the average sea-level atmospheric pressure under standard temperature conditions.

By using the ISA standard pressure, pilots and meteorologists can ensure consistency in their measurements and calculations, as deviations from this standard can impact aircraft performance and weather forecasting. Understanding the significance of this standard helps remote pilots navigate various regulatory requirements and operational considerations effectively.