How do you assign more than one altitude?

The correct approach to assigning more than one altitude is to maintain a block altitude through specified altitudes. This method allows for the assignment of a range or block of altitudes to aircraft, which is particularly useful in busy airspace where multiple aircraft need to operate safely and efficiently at varying altitudes.

For example, when managing multiple aircraft within a designated area, a controller can issue a block altitude, such as "Maintain block altitude from 8,000 to 10,000 feet." This ensures that all aircraft operating within that block have defined altitude limits yet can maneuver safely within that space, facilitating efficient air traffic management and reducing the risk of altitude conflicts.

Maintaining different altitudes simultaneously would not be feasible as air traffic control requires standardized altitude assignments to avoid potential collisions. Assigning individual altitudes would provide integrated management for each aircraft but may not be the best approach in high-density airspaces where a block altitude system can optimize traffic flow. Issuing a constant altitude limits the flexibility needed for handling multiple aircraft and does not accommodate the variable conditions often present in air traffic settings.