What is the maximum operating speed for Flap 1 on the Republic Airlines ERJ 170/175?

The maximum operating speed for Flap 1 on the Republic Airlines ERJ 170/175 is 215 knots indicated airspeed (KIAS). This speed is critical because it defines the upper limit of airspeed at which the aircraft can be safely operated with Flap 1 extended. Exceeding this speed could lead to potential flight control issues or structural stress, given that different flap settings significantly affect the aerodynamics of the aircraft.

Understanding this limitation is essential for ensuring safe operation during takeoff, approach, and landing phases of flight. Maintaining airspeeds within specified limits helps prevent excessive loads on the wing and flaps, contributing to overall aircraft stability and performance. Being aware of such limitations allows pilots to make informed decisions in varying flight conditions, enhancing safety for both crew and passengers.

Other options represent incorrect speed limits for Flap 1, which would either exceed safety margins established in the aircraft's operational guidelines or not correspond to the actual operational envelope defined by the manufacturer.