What is SLT on Airbus A330? (Slat)

The Airbus A330 is a popular wide-body twin-engine jetliner that is widely used by airlines around the world. It is known for its versatility, efficiency, and reliability. One of the key features of the A330 is its slats, also known as SLTs. In this article, we will explore what slats are, how they work, and their importance in the overall performance of the Airbus A330.

Understanding Slats

Slats are movable surfaces located on the leading edge of an aircraft’s wings. They play a crucial role in improving the aerodynamic performance of an aircraft during takeoff and landing. The primary function of slats is to increase the lift produced by the wings, allowing the aircraft to generate the necessary lift at lower speeds.

How do Slats Work on the Airbus A330?

On the Airbus A330, the slats are deployed during the takeoff and landing phases of flight. When the aircraft is on the ground and preparing for takeoff, the slats are extended to increase the wing’s surface area, thereby increasing lift. This helps the aircraft achieve the necessary lift required to become airborne at lower speeds.

During landing, the slats are also extended to enhance the wing’s lift capabilities. As the aircraft approaches the runway, the extended slats create a higher angle of attack, allowing for a slower landing speed. This is especially important when landing on shorter runways or in adverse weather conditions.

Types of Slats on the Airbus A330

The Airbus A330 is equipped with two types of slats: the fixed leading edge slats and the Krueger flaps. The fixed leading edge slats are located on the outer portion of the wing’s leading edge and help improve the lift and stability of the aircraft during takeoff and landing.

The Krueger flaps, on the other hand, are located on the inner portion of the wing’s leading edge. These slats are deployed at higher speeds to further increase lift and improve the overall performance of the aircraft. The Krueger flaps are particularly useful during the approach and landing phases of flight, where a higher lift coefficient is required.

Benefits of Slats on the Airbus A330

The deployment of slats on the Airbus A330 offers several benefits:

  • Improved lift at lower speeds: The slats allow the A330 to generate sufficient lift at lower speeds, making takeoffs and landings safer and more efficient.
  • Enhanced maneuverability: The increased lift provided by the slats improves the aircraft’s maneuverability, allowing for better control during critical phases of flight.
  • Shorter takeoff and landing distances: By increasing lift, the slats help reduce the required takeoff and landing distances, enabling the A330 to operate from shorter runways.
  • Better performance in adverse weather conditions: The extended slats create a higher angle of attack, which improves the A330’s performance during crosswinds, gusty conditions, and other adverse weather situations.


The slats on the Airbus A330 play a vital role in improving the aircraft’s aerodynamic performance during takeoff and landing. By increasing lift and enhancing maneuverability, the slats contribute to safer, more efficient flights. Understanding the importance of slats in the overall performance of the A330 highlights the level of engineering and design that goes into creating these advanced aircraft.

If you want to learn more about the Airbus A330 and its various features, you can visit the official Airbus website.

For More: What is HCU on Airbus A330? (Hydraulic Control Unit)