In Class B, C, D, and E airspace, what is the visibility requirement?

The visibility requirement of 2 statute miles (SM) and 1,000 feet below the clouds is specific to Class E airspace when operating below 10,000 feet above mean sea level (AMSL). This standard aligns with the regulations set for aircraft operating in lower altitude airspace, ensuring that pilots maintain visual separation from clouds and other obstacles.

In Class E airspace, this requirement is designed to enhance safety by providing pilots with a clear line of sight and adequate room to operate safely in the vicinity of other air traffic and obstructions. It allows for sufficient visibility to navigate effectively while also maintaining proper separation from clouds, which helps in avoiding inadvertent entry into instrument meteorological conditions (IMC).

For instance, the visibility requirements in Class B, C, and D airspace differ, often necessitating greater visibility and separation from clouds to accommodate higher traffic volumes and more significant operational complexity. Recognizing these distinctions is crucial for pilots when planning their flights in varying types of airspace.