What is the key factor distinguishing CASE 2 from CASE 1 flight operations?

The distinction between CASE 2 and CASE 1 flight operations primarily hinges on the factors of visibility and altitude ceiling. During CASE 1 operations, conditions are typically optimal, allowing for unrestricted flight operations, which means visibility is good and altitude ceilings are high enough to facilitate safe operations without additional restrictions.

In contrast, CASE 2 operations are initiated when visibility is still acceptable, but the altitude ceiling may be lower, which necessitates more stringent operational parameters to ensure safety during takeoff and landing procedures. This includes a requirement for pilots to remain within certain predefined limits due to the reduced visibility and ceiling. Therefore, understanding and recognizing these operational thresholds is crucial for ensuring safe flight operations aboard naval vessels.

This is why visibility and altitude ceiling are the key factors distinguishing CASE 2 from CASE 1, as they directly impact the planning and execution of flight operations under varying weather conditions.