Which equipment is NOT required to meet RVSM minimum equipment standards?

The requirement for Reduced Vertical Separation Minimum (RVSM) compliance includes specific equipment standards to ensure safety at high altitudes, where air traffic is denser. Among the listed options, having one Flight Management System (FMS) is not a mandatory requirement for meeting RVSM minimum standards.

The core equipment needed for RVSM compliance primarily centers on ensuring accurate altitude monitoring and control. This includes two compliant air data systems for redundancy and reliability in altitude reporting, an operational autopilot that is engaged with altitude hold capability to maintain the required flight levels, and an altitude alerter to notify the crew of any altitude deviations.

While a Flight Management System may enhance operational efficiency and assist with route navigation, it does not directly contribute to altitude management or RVSM compliance. Thus, the absence of a Flight Management System does not prevent an aircraft from meeting the essential RVSM equipment standards.