Which record provides a continuous history of an aircraft's basic weight?

The correct record that provides a continuous history of an aircraft's basic weight is the DD Form 365-3. This form is specifically designed to track the aircraft's weight and balance information over time, documenting any changes to the basic weight. Such changes may occur due to modifications, repairs, or weight adjustments from equipment being added or removed. Maintaining this historical record is crucial for flight safety, as it ensures that the aircraft operates within its approved weight limits, which is essential for effective performance and compliance with regulations.

In contrast, the other forms serve different purposes. The DD Form 365-4 is aimed at documenting the aircraft’s weight and balance data but does not provide a continuous history. The DD Form 365-2 deals with the weight and balance computations based on the established parameters but doesn't track the historical changes. The DD Form 365-1 is utilized for a separate assessment of weight loads. Understanding the purpose of each form helps clarify why DD Form 365-3 is the appropriate choice for maintaining a continuous history of an aircraft's basic weight.