What is the standard vertical separation reduction implemented by RVSM?

The correct answer reflects the standard vertical separation reduction implemented by Reduced Vertical Separation Minimum (RVSM). RVSM allows aircraft to fly at altitudes within certain levels with a reduced vertical separation of 1,000 feet between flight levels, instead of the previously required 2,000 feet. This change enhances airspace capacity and improves the efficiency of flight operations by allowing more aircraft to utilize the same vertical airspace, especially in busy air traffic regions.

The context around RVSM is important; it applies to flight levels between 29,000 feet and 41,000 feet, where sufficient accuracy in altitude measurements is crucial. Aircraft must be equipped with precise altitude-keeping systems and are subject to monitoring to ensure compliance with these separation minima. This regulation improves safety while optimizing air traffic management, leading to more efficient flight routing and fuel use.