Domestic Reduced Vertical Separation Minimum (DRVSM)

Domestic Reduced Vertical Separation Minimum (DRVSM)

Domestic Reduced Vertical Separation Minimum (DRVSM) refers to a aviation standard that allows aircraft to fly at narrower vertical separation distances in the airspace between Flight Level (FL) 290 and FL 410. This improves operational, traffic, and airspace efficiency by allowing more planes to fly at the same altitude, thus increasing the capacity of the domestic airspace.

The DRVSM standard is designed to replace the previous Vertical Navigation (RNAV) system that has been in use in domestic airspace. By reducing the vertical separation minimum from 2,000 feet to 1,000 feet, it allows for more efficient routing of aircraft and flight planning. DRVSM improves safety and efficiency by increasing the number of aircraft that can fly in a given airspace, reducing congestion and minimizing the risk of collision.

To comply with DRVSM, aircraft must be equipped with approved altimetry systems and meet certain performance requirements. Pilots are required to undergo specific training and demonstrate proficiency in managing aircraft at reduced separation. The implementation of DRVSM has been an important step in modernizing the aviation industry and improving the utilization of domestic airspace, while maintaining the highest levels of safety and efficiency.