What is indicated by the green arrow under the green 050/65?

The green arrow under the green 050/65 indicates the magnetic wind direction. This is a crucial piece of information for pilots as it provides the direction the wind is coming from, which is expressed in magnetic heading. Understanding wind direction is important in flight operations since it affects aircraft performance during takeoff, landing, and navigation.

In the cockpit display, the magnetic wind indication helps pilots make real-time decisions regarding their flight path, approach, and landing maneuvers. This data is particularly essential in changing weather conditions, allowing pilots to adjust their operations accordingly.

The other choices, such as the direction of the nearest suitable emergency airport, the VOR 1 needle, and the ADF needle, represent different navigational and operational data, but they do not pertain specifically to wind direction. Thus, the context provided by the green arrow under the green 050/65 confirms that this indicator is focused exclusively on the magnetic wind direction.