From flap 0 to 1, at or below 100 kts, what is the resulting configuration for slats and flaps?

When configuring the A320, the transition from flap 0 to flap 1 at or below 100 knots results in the aircraft achieving the configuration known as CONF 1+F. In this configuration, both the slats and the flaps extend partially, which provides additional lift and helps enhance the stall characteristics of the aircraft at lower speeds, specifically when the aircraft requires more lift during takeoff or when maneuvering close to the ground.

CONF 1+F is utilized primarily during the initial phases of flight to support takeoff performance and handling. This setting is crucial since it allows the aircraft to maintain controllability and stability with an extended lift device configuration.

Understanding when and how to select this configuration is essential for pilots, especially under varying flight conditions and weight configurations, as each setting has specific performance implications.