Which of the following does NOT belong to the No Go Criteria for CLZ?

The No Go Criteria for Controlled Landing Zones (CLZ) typically include conditions that directly affect safety and operational effectiveness during landing and takeoff. Weather conditions are critical in determining whether a landing can safely occur.

Wind conditions over 30 knots can create turbulence and significantly affect the safety of aircraft landings, making it a valid concern in the No Go Criteria. Loss of communications poses a serious risk, as it hampers coordination and situational awareness, which are essential for safe operations. Significant breather height over 6.9 FT can also impact the feasibility of landing, especially for certain types of aircraft that require specific clearances.

In contrast, weather below freezing, while it can present challenges such as ice formation or decreased visibility, is not inherently a criterion that prevents safe landings in all circumstances. Many aircraft and operations are equipped to handle freezing conditions, and as such, freezing weather does not necessarily belong to the No Go Criteria. Hence, it is correctly identified as not being part of the critical factors that would automatically halt operations in a CLZ.