The determination of the Maximum External Load (MEL) takes into account which of the following?

The determination of the Maximum External Load (MEL) primarily relies on aircraft performance traits, which encompass various factors including the aircraft's weight capacity, lift capabilities, and overall abilities under specific operating conditions. These performance traits establish the upper limits of what the aircraft can safely carry when external loads are involved, ensuring that the load doesn't exceed safety margins or operational limits.

While factors such as the weather forecast and the time of day may influence operational decisions and safety considerations, they do not directly determine the MEL. Weather conditions could impact flight safety and performance, and time of day may affect visibility and operational efficiency, but the MEL calculation itself is grounded in the inherent characteristics and specifications of the aircraft in question.