What happens when the TOGA buttons are pressed prior to takeoff?

When the TOGA (Takeoff/Go-Around) buttons are pressed prior to takeoff, the action serves to slew the Flight Management System (FMS) position to align with the aircraft's current position and provides command bars for takeoff pitch on both Primary Flight Displays (PFDs). This is crucial during the takeoff phase, as aligning the FMS with the aircraft's actual position ensures the flight management systems are synchronized, allowing for accurate navigation and guidance during takeoff. The command bars then give the pilots visual guidance on the appropriate takeoff pitch to follow, assisting in achieving the necessary climb performance.

The other options do not accurately capture the immediate function of the TOGA buttons. While setting takeoff thrust limits is part of the takeoff preparation, it is not what the TOGA buttons directly accomplish when pressed. They activate a thrust setting for takeoff, but the core role associated with their use before takeoff is the alignment of the FMS and provision of pitch guidance. Engaging navigation systems for departure is not a direct function of pressing TOGA, as navigation is already integrated into the system. Similarly, recording flight data for takeoff is a separate process that occurs within the aircraft’s systems and is not directly linked to