Which of these statements is true regarding the coordination for aircraft operating in RVSM airspace?

The statement that all aircraft must have RVSM (Reduced Vertical Separation Minimum) capability is accurate because RVSM airspace is specifically designed to allow aircraft to operate at reduced vertical separations, typically 1,000 feet, between 29,000 and 41,000 feet. For safety and efficiency, only those aircraft that meet the stringent requirements laid out for RVSM operations, which include maintaining altitude within strict tolerances, are permitted in this airspace.

If a non-RVSM compliant aircraft were to operate in this airspace, it could pose risks to the safety and effectiveness of air traffic management, as these aircraft would not be able to safely maintain the required altitude precision needed to avoid potential conflicts with other aircraft flying at the same levels. Therefore, only those aircraft that are certified for RVSM operations may enter and operate in this airspace, ensuring a safe and regulated flight environment.