How are changes to orders referred to in air traffic control?

In air traffic control, changes to orders, regulations, or instructions are formally referred to using specific terminology that reflects their nature. The terms “Change,” “Notice,” and “supplements” capture the essence of how modifications to orders are communicated within the aviation industry. A "Change" indicates an alteration in existing orders; a "Notice" is often used to alert personnel to important information or changes in operational procedures, and "supplements" typically provide additional information that supports or modifies the original order. This terminology is consistent with official protocols and ensures clarity and precision when disseminating important updates to air traffic controllers and other aviation professionals.

Understanding these specific terms is crucial for maintaining effective communication and ensuring safety in air traffic operations. The other choices contain terminology that does not align with the standards used in air traffic control documentation.