What is the maximum number of passenger seats in the ERJ 175?

The maximum number of passenger seats in the ERJ 175 is 78. This figure is established by the aircraft's design, which allows for a standard seating configuration in a 2-2 arrangement in the economy class. The configuration is designed to maximize comfort while also providing sufficient space for a significant capacity of passengers.

The ERJ 175 is commonly used for regional routes and the seating capacity of 78 is within the framework set by manufacturers and regulatory authorities to ensure safety and compliance with operational requirements. Understanding the aircraft's limitations is crucial for pilots and operators to ensure adherence to regulations and to optimize performance during flight operations.

The other options reflect configurations that either exceed typical operational limits or do not align with standard industry practices for this specific model. Ensuring accurate knowledge of seating capacity helps in planning for weight and balance, passenger service, and overall operational efficiency.