FAA Aircraft Dispatcher Practice Exam

What requirements must be satisfied to operate in RVSM airspace?

1. The aircraft must have a two altimeter system

2. Aircraft must be above 25000 feet

3. The aircraft must be equipped only with basic navigation instruments

4. Operational prior experience in high-altitude flight

The correct answer is: The aircraft must have a two altimeter system

To operate in Reduced Vertical Separation Minimum (RVSM) airspace, the primary requirement is that the aircraft must be equipped with a dual altimeter system. This is crucial because RVSM airspace allows for a vertical separation of only 1,000 feet between aircraft flying between 29,000 and 41,000 feet. The dual altimeter requirement ensures redundancy and accuracy in altitude reporting, which is essential for maintaining safe separation in such closely spaced airways. Aircraft equipped with two independent altimeters can cross-check readings, thus providing a more reliable altitude measurement. In this environment, where precision is vital, a single altimeter would not meet safety standards due to the potential for failure or inaccuracy. The other requirements listed, such as operating above 25,000 feet, may be relevant to general high-altitude operations but do not specifically pertain to RVSM criteria. Similarly, basic navigation instruments or prior experience in high-altitude flight do not sufficiently address the safety and separation concerns fundamental to operating within RVSM airspace. Therefore, the dual altimeter system is the key requirement.