If you have RVR reported as 6-5-6, can you depart?

When RVR, or Runway Visual Range, is reported as 6-5-6, it indicates that the visibility along the runway is not sufficient for safe departures according to standard operating procedures. Specifically, the lowest value in this sequence—5—suggests that the visibility is below the minimum requirements for takeoff as stipulated by aviation regulations and guidelines. Given that commercial aircraft typically require a specific visibility threshold to ensure safety during departure, a reported RVR of 5 would prohibit the aircraft from departing.

This does not imply that it is inherently dangerous to operate in such conditions under all circumstances, but rather that regulations are established to ensure a safe margin for operations. Since the RVR is not meeting the minimum thresholds, the decision to not depart protects the safety of the aircraft and its occupants. Each category of airspace has specific criteria, and adherence to these is crucial for maintaining safety.