In aviation, what does OAT stand for?

OAT in aviation stands for Outside Air Temperature. This measurement is crucial for pilots as it provides information about the temperature of the air surrounding the aircraft while in flight. The Outside Air Temperature can significantly impact aircraft performance, affecting engine efficiency, lift, and fuel consumption. Accurate knowledge of OAT helps pilots calculate density altitude, which is vital for takeoff and landing performance calculations.

Understanding OAT is essential for safe flight operations, as extreme temperatures can lead to reduced engine performance or changes in lift efficiency. Therefore, pilots monitor OAT closely throughout their flight to ensure optimal performance and safety.