OAT

Outside Air Temperature (OAT)

Outside Air Temperature, commonly referred to as OAT, is the temperature of the air surrounding an aircraft outside of its cockpit. OAT plays a critical role in aviation, as it directly affects the performance, behavior, and safety of aircraft in flight.

OAT is measured in degrees Celsius or Fahrenheit, depending on the unit system used by the country. The temperature can be obtained using a thermometer or a temperature probe, which is usually attached to the nose or wing of the aircraft.

OAT is an essential parameter in flight planning, as it influences several critical factors such as aircraft takeoff and landing distances, engine performance, fuel consumption, and aircraft weight limitations. Pilots regularly check the OAT before takeoff to adjust their flight plans accordingly, ensuring that they can safely operate the aircraft under the given conditions.

Additionally, OAT is used in weather forecasts to assess the likelihood of icing, turbulence, or other hazardous conditions that could affect flight safety. Meteorologists use OAT data to determine the freezing level, which indicates at what altitude the temperature is low enough for supercooled water to freeze on contact with the aircraft.

In summary, OAT is a vital parameter in aviation, influencing critical aspects of flight safety and performance. Pilots and meteorologists constantly monitor OAT to ensure that the aircraft operates safely and efficiently under all circumstances.