What is DU on Airbus A320? (Display Unit)

The Display Unit (DU) is an essential component of the Airbus A320 aircraft’s cockpit. It plays a vital role in providing critical information to the pilots, ensuring a safe and efficient flight. The DU is a multifunctional display screen that presents various flight parameters, system status, and navigation data in a clear and organized manner. Let’s take an in-depth look at the different aspects of the Display Unit and its significance in the operation of the Airbus A320 aircraft.

The Functionality of the Display Unit

The Display Unit on the Airbus A320 consists of several display panels, each serving a specific purpose. These panels include the Primary Flight Display (PFD), Navigation Display (ND), and Engine and Systems Display (E/WD). Each panel provides different types of information to aid the pilots in various flight phases.

Primary Flight Display (PFD)

The Primary Flight Display (PFD) is one of the primary interfaces for the pilots. It presents essential flight parameters and information required to control the aircraft’s attitude, altitude, and airspeed. The PFD displays information such as:

– Aircraft pitch, roll, and yaw

– Altitude, airspeed, and vertical speed

– Navigation aids and flight path guidance

The PFD also provides alerts and warnings related to the aircraft’s flight envelope, ensuring the pilots remain within safe operating limits. This includes features like the Speed Tape, Attitude Indicator, and Flight Director. The Speed Tape indicates the aircraft’s speed, while the Attitude Indicator displays the aircraft’s pitch and roll. The Flight Director assists the pilots in following the designated flight path.

Navigation Display (ND)

The Navigation Display (ND) on the Airbus A320 provides the pilots with crucial information about the aircraft’s position, route, and navigation aids. It displays information such as:

– Map display with aircraft position

– Flight plan and waypoints

– Weather data and traffic information

– Terrain awareness and ground proximity warnings

The ND assists the pilots in navigating the aircraft accurately, avoiding hazardous weather conditions, and adhering to the prescribed flight route. It also provides traffic information from the aircraft’s Traffic Collision Avoidance System (TCAS) and highlights potential conflicts with other aircraft.

Engine and Systems Display (E/WD)

The Engine and Systems Display (E/WD) is responsible for presenting critical information related to the aircraft’s engines, systems, and other supplementary data. It provides:

– Engine parameters such as thrust, temperature, and oil pressure

– Fuel information and consumption rates

– Hydraulics, electrical, and air conditioning system status

– Aircraft configuration and warnings/annunciations

The E/WD allows the pilots to monitor the health and performance of the aircraft’s engines and systems. It enables them to make informed decisions regarding fuel consumption, system malfunctions, and maintenance requirements.

The Importance of Reliable and Accurate Display Units

Reliability and accuracy are crucial factors when it comes to the Display Units on the Airbus A320. These panels are the primary sources of information for the pilots, and any discrepancies or failures can significantly impact flight operations and safety.

The Display Units undergo rigorous testing and certification processes to ensure their reliability and accuracy. They are designed to withstand various environmental conditions, including temperature, vibration, and electromagnetic interference. Additionally, redundant systems are in place to mitigate the risks of single-point failures.

It is essential for the pilots to have complete trust in the information displayed on the DU. They rely on this data to make critical decisions during takeoff, landing, and throughout the flight. Accurate display of flight parameters, navigation aids, and system status allows the pilots to operate the aircraft efficiently and respond effectively to any abnormal situations.

Regular maintenance and monitoring of the Display Units are also crucial to ensure their continued reliability. This includes periodic calibration, software updates, and thorough inspections to detect any potential issues or failures in advance.


The Display Unit (DU) plays a vital role in the operation of the Airbus A320 aircraft. It provides pilots with crucial flight parameters, navigation information, and system status in a clear and organized manner. The DU consists of display panels such as the Primary Flight Display (PFD), Navigation Display (ND), and Engine and Systems Display (E/WD), each serving specific purposes.

Reliability and accuracy are paramount for the Display Units, and they undergo rigorous testing and certification processes. Pilots depend on the information presented on the DU to ensure a safe and efficient flight. Regular maintenance and monitoring further contribute to the continued reliability of the Display Units.

As the aviation industry continues to evolve, Display Units will likely see advancements in technology, enhancing their capabilities and functionality. These advancements will further aid pilots in making informed decisions and improving flight operations.

For More: What is on Airbus A320? ()