When does the automatic "Pull up Pull down" function activate?

The automatic "Pull up Pull down" function is designed to activate under specific conditions related to aircraft operation and safety. When the main cabin door is open on the ground, the system takes into account the safety of the passengers and crew. In this situation, the aircraft is typically in a stationary state, and the door being open could pose operational hazards. Therefore, activating the "Pull up Pull down" function ensures that any necessary warnings or adjustments are communicated effectively when there might be an imbalance or instability due to the door position.

This functionality helps to prevent potential accidents that could arise from the aircraft being in an unsafe configuration while the door is open. Understanding these activation conditions is important for ensuring both safety and compliance with operational procedures in aviation.