Final answer:
Scheduled Unitary Activities (SUA) within their properly scheduled parameters do not generally require a NOTAM, as they are expected to be included in published aeronautical information. However, if there are deviations from the schedule or boundaries, a NOTAM is needed to inform pilots of these changes to ensure safety.
Step-by-step explanation:
The question revolves around whether activities within Scheduled Unitary Activities (SUA) that occur correctly within their designated time and boundaries necessitate the issuance of a Notice to Airmen (NOTAM). SUA includes areas where military training, testing, or other specific aviation activities take place, and these areas are pre-defined in terms of time and geographical space.
NOTAMs are important informational notices issued to inform aircraft pilots of potential hazards along a flight route or at a location that could affect the safety of the flight. If a SUA is active within its scheduled times and accurately reflects published information available to pilots, it generally does not require an additional NOTAM as pilots are expected to refer to the available aeronautical publications like charts and the A/FD (Airport/Facility Directory) for such scheduled activities.
However, if there are any changes to the scheduled SUA activities, such as a change in timing or dimensions that differ from the information available in the published sources, a NOTAM would indeed be necessary to inform pilots of these changes. As always, the overriding concern is pilot and aircraft safety and the goal of NOTAMs is to minimize surprises to pilots that could compromise safety.