What is the minimum number of PSCs required onboard the ERJ 175?

The correct answer is based on the requirements established by regulatory agencies for the operation of the ERJ 175. The minimum number of Power Supply Circuits (PSCs) required on the aircraft ensures that sufficient electrical redundancy and reliability are provided for critical systems. In the case of the ERJ 175, a total of 15 PSCs is mandated to support the aircraft's operational needs, contributing to the safety and functionality of its avionics and electrical systems.

This design consideration also facilitates continuous operation in the event of an electrical failure. The distribution of these circuits allows for multiple systems to draw power without compromising essential aircraft functions, which is crucial in maintaining operational integrity throughout a flight. Having 15 PSCs aligns with best practices in aviation safety and efficiency, ensuring that the aircraft can respond effectively to various operational scenarios.

Understanding the significance of having an adequate number of PSCs highlights the importance of electrical system design in modern aircraft. The standards are set to enhance safety, reliability, and redundancy, which are key elements in aviation engineering and operations.