What is LVL on Airbus A320? (Level)

Level, abbreviated as LVL, is an essential term used in the aviation industry, particularly in the context of Airbus A320 aircraft. It refers to the control of the aircraft’s pitch angle, ensuring the aircraft maintains a specific altitude during flight. In simpler terms, level represents the horizontal position of the aircraft with respect to the ground. Controlling and maintaining the level of an aircraft is crucial for safe and efficient operations.

To understand the significance of level on an Airbus A320, let’s delve into the technical aspects and explore how it contributes to the overall flight experience.

Mechanisms for Maintaining Level on Airbus A320

An Airbus A320 is equipped with various mechanisms to control and maintain level during flight. These mechanisms work together to ensure a stable and controlled flying experience. Here are some key components involved in maintaining level on an Airbus A320:

Mechanism 1: Elevators

The primary mechanism used to control the pitch angle and maintain level on an Airbus A320 is the elevators. The elevators are movable surfaces attached to the trailing edge of the horizontal stabilizer, located at the tail of the aircraft. By deflecting the elevators upwards or downwards, the pilot can control the aircraft’s pitch angle and, consequently, its level.

When the pilot pulls the control column or yoke backwards, the elevators move upward, causing the aircraft’s nose to pitch up. This upward pitch increases the angle of attack, resulting in an increase in lift and a climb in altitude. Conversely, when the pilot pushes the control column forward, the elevators move downwards, causing the aircraft’s nose to pitch down. This downward pitch decreases the angle of attack, reducing lift and initiating a descent.

By skillfully manipulating the elevators, pilots can achieve precise level control, ensuring the aircraft maintains its desired altitude.

Mechanism 2: Autopilot

The Airbus A320 is equipped with an advanced autopilot system that assists pilots in maintaining level during flight. The autopilot system is designed to autonomously control the aircraft’s pitch, roll, and yaw, providing pilots with additional support and reducing their workload.

When engaged, the autopilot can maintain a constant level by automatically adjusting the elevators and other flight control surfaces as necessary. This system utilizes various sensors and instruments, such as altitude sensors, attitude gyros, and accelerometers, to gather data and make the necessary adjustments to ensure level flight.

The autopilot system on the Airbus A320 is highly sophisticated and can even perform complex maneuvers, such as precision approaches and holding patterns, with remarkable accuracy. However, it’s important to note that even with the assistance of autopilot, pilots still retain full control over the aircraft and are responsible for its safe operation.

Mechanism 3: Flight Management System

The Flight Management System (FMS) is another crucial component that contributes to maintaining level on an Airbus A320. The FMS is a sophisticated computerized system that assists pilots in managing the aircraft’s navigation, flight planning, and control.

Through the FMS, pilots can enter their desired flight parameters, including altitude, speed, and desired level, into the system. The FMS then calculates and displays the necessary pitch angles, thrust settings, and other control inputs required to achieve and maintain the desired level. This data is continuously updated throughout the flight, ensuring the aircraft remains on the intended level.

The FMS also takes into account various external factors, such as wind speed and direction, temperature, and weight of the aircraft, to calculate the most efficient and optimal flight profile. It assists the pilots in making real-time adjustments to ensure level flight is maintained, even in changing atmospheric conditions.

Importance of Maintaining Level on Airbus A320

The maintenance of level on an Airbus A320 is of utmost importance for the safety and efficiency of the aircraft. Here’s why:

Precise Altitude Control

By maintaining level, the pilot ensures the aircraft maintains a specific altitude, which is crucial for safe separation from other aircraft and compliance with air traffic control instructions. Precise altitude control is particularly essential during takeoff, landing, and in congested airspace, where maintaining a prescribed level is crucial for safe separation and orderly flow of air traffic.

Optimal Fuel Efficiency

Maintaining level also contributes to optimal fuel efficiency. By flying at a predetermined level, the aircraft can operate within its most efficient range, minimizing fuel consumption. This not only reduces operational costs for airlines but also helps to reduce the overall environmental impact of air travel.

Airbus has been working relentlessly to enhance the fuel efficiency of its aircraft, including the A320, through aerodynamic improvements, lightweight materials, and advanced engine technologies. Maintaining level plays a significant role in maximizing the benefits of these fuel-saving measures.

Passenger Comfort

Maintaining level is crucial for passenger comfort and experience. Sudden changes in altitude and abrupt fluctuations in level can cause discomfort and unease among passengers. By ensuring a smooth and level flight, pilots can provide a more enjoyable and pleasant journey for passengers.

Furthermore, maintaining level also contributes to a stable and controlled cabin environment. It allows flight attendants to perform their duties safely and efficiently, reducing the risk of accidents and ensuring a higher standard of service onboard.


Level, abbreviated as LVL, is a critical aspect of maintaining altitude and stability on an Airbus A320 aircraft. Through mechanisms such as elevators, autopilot, and the flight management system, pilots can control and maintain level during flight. This ensures safe separation from other aircraft, optimal fuel efficiency, and a pleasant flight experience for passengers. As technology continues to advance in the aviation industry, maintaining level remains an essential practice in the pursuit of safer and more efficient air travel.

For more information about the Airbus A320 and its advanced features, visit the official Airbus website.

For More: What is FCU on Airbus A320? (Flight Control Unit)