What is SD on Airbus A320? (System Display)

The System Display (SD) on the Airbus A320 aircraft is an essential component of the aircraft’s cockpit. It provides critical information to the pilots, enabling them to monitor and control various systems on the aircraft. In this article, we will delve into the details of the System Display on the Airbus A320 and explore its functionalities.

Understanding the System Display (SD)

The System Display is a specialized multifunctional display located in the cockpit of the Airbus A320. It is part of the aircraft’s Electronic Flight Instrument System (EFIS) and serves as a primary source of information for the pilots. The SD offers a comprehensive and organized layout of various aircraft systems, aiding the flight crew in effectively monitoring and managing critical parameters.

The System Display on the Airbus A320 provides pilots with vital information related to flight management, engine monitoring, fuel quantity, hydraulic and electrical systems, and much more. It presents this information in a clear and intuitive manner, allowing the pilots to quickly grasp the status of various systems during all phases of flight.

Functionalities of the System Display

The System Display on the Airbus A320 offers several important functionalities that contribute to the safe and efficient operation of the aircraft. Let’s explore some of these functionalities:

1. Flight Management

The System Display provides essential flight management information to the pilots. It includes details about the aircraft’s position, heading, altitude, airspeed, and vertical speed. Additionally, it displays the active flight plan, waypoints, and navigation aids, keeping the flight crew well-informed about their route and progress.

Example: During the approach and landing phase, the System Display guides the pilots by presenting visual aids such as the aircraft’s glide path and localizer deviation.

2. Engine Monitoring

Another crucial functionality of the System Display is engine monitoring. It presents detailed information about the aircraft’s engines, including engine parameters, such as N1, N2, EGT, and fuel flow. This allows the pilots to monitor engine performance and detect any anomalies promptly.

Example: In the event of an engine failure or abnormal engine behavior, the System Display provides visual alerts and indications to assist the pilots in identifying and responding to the issue.

3. Systems Monitoring

The System Display also facilitates the monitoring of various aircraft systems, including hydraulics, electrics, fuel, and more. It presents the status of each system in a concise and easily understandable format, allowing the pilots to quickly identify any abnormal conditions.

Example: If there is a fault in the hydraulic system, the System Display will provide visual alerts and advisories, highlighting the affected components and guiding the pilots in taking appropriate actions.

Overall, the System Display plays a significant role in providing pilots with the necessary information to operate the Airbus A320 safely and efficiently. Its intuitive design and comprehensive functionalities enhance situational awareness and enable the flight crew to make informed decisions during all phases of flight.


The System Display (SD) on the Airbus A320 is a critical component of the aircraft’s cockpit, providing pilots with vital information about various systems and parameters. This multifunctional display enhances situational awareness and aids in efficient decision-making during all phases of flight. Pilots can rely on the System Display to monitor flight management, engine performance, and systems status, ensuring the safe and smooth operation of the Airbus A320.

For More: What is FADEC on Airbus A320? (Full Authority Digital Engine Control)