Final answer:
The DD Form 365-4 is checked for accuracy before each flight to maintain safety and compliance with weight and balance regulations in military aviation.
Step-by-step explanation:
The accuracy of the DD Form 365-4, which is the Weight and Balance Clearance Form F - Transport and is used within the United States Air Force, should be checked before each flight. Since the form contains vital information about the aircraft's weight and balance, it is crucial that this data is accurate at all times to ensure the aircraft operates within its limits for safe flight. The form is part of a series of documents that ensure compliance with the regulations for the weight and balance of military aircraft and is a key element in military aviation safety protocols.