What does the horizontal dashed line from point C to point E on a load factor graph represent?

The horizontal dashed line from point C to point E on a load factor graph typically represents the positive limit load factor. This line indicates the maximum load factor that an aircraft can safely sustain during normal operations without any structural compromise. Understanding how load factor affects an aircraft's performance is critical for pilots, as exceeding this limit can lead to structural failure.

The positive limit load factor is established to provide a safety margin during maneuvers and variations in flight, such as during turns or turbulence. It defines the threshold above which the aircraft shouldn't operate in circumstances that would combine various forces acting on the aircraft, thus offering a clear guideline for safe piloting practices.

Recognizing the importance of this limit helps ensure safety in flight situations, making it essential knowledge for anyone studying aerodynamics or flight operations.