What does the term "declutter" refer to on the PFD?

The term "declutter" on the Primary Flight Display (PFD) refers to the process of removing unnecessary information to enhance the clarity and readability of essential flight data. In aviation, especially during critical flight phases such as takeoff, landing, or navigation, having a clean and straightforward display allows pilots to quickly and accurately interpret important information without being overwhelmed by extraneous data.

By decluttering the PFD, pilots can focus on vital flight parameters like altitude, airspeed, and heading, which are crucial for safe flight operations. This function is designed to help reduce cognitive workload and improve situational awareness, ensuring that pilots can respond effectively to changing conditions and required actions. The other options pertain to different aspects of flight management and systems operation but do not specifically address the purpose of decluttering the PFD.