PSA Airlines Canadair Regional Jet Systems (PSA-CRJ) Practice Exam

What is the primary function of the Data Concentrator Unit (DCU)?

1. Control lighting systems

2. Transmit data to flight records

3. Process inputs from various aircraft systems

4. Manage audio communications

The correct answer is: Process inputs from various aircraft systems

The primary function of the Data Concentrator Unit (DCU) is to process inputs from various aircraft systems. The DCU acts as a central hub that collects and consolidates data from different sensors and systems throughout the aircraft. This includes data from flight control surfaces, engines, and other essential systems that are critical for the operation and management of the aircraft. By processing this data, the DCU ensures that the flight deck receives accurate and timely information, which is vital for decision-making by the flight crew. The ability to integrate and process diverse inputs enables the DCU to contribute to the safety and efficiency of flight operations. This centralized data processing capability is crucial in facilitating communication between various aircraft systems and the flight management systems, ensuring that the aircraft operates smoothly and safely.