Final answer:
In the context of NATOPS, 'Should' indicates a recommendation that is advised but not compulsory, aiming to maintain safety and effectiveness in aviation operations.
Step-by-step explanation:
The term 'Should' as it applies to NATOPS, which stands for Naval Air Training and Operating Procedures Standardization, indicates a recommended action or procedure that is advisable but not mandatory. NATOPS is a set of guidelines designed to improve flight safety and efficiency within the United States Navy and Marine Corps aviation units. The use of the word 'should' implies that while the action is not a strict requirement, it is nevertheless a strong suggestion that operators are encouraged to follow to maintain high standards of safety and operational effectiveness.