What is the maximum altitude display difference in RVSM for the Envoy 175?

In Reduced Vertical Separation Minimum (RVSM) airspace, the regulations specify that aircraft altimeters must be calibrated and functioning to ensure that there is a maximum altitude display difference between two aircraft of no more than 200 feet. This allows for the safe operation of aircraft at closer vertical intervals than previously permitted.

The correct choice of 180 feet seems to reflect a misunderstanding of the RVSM criteria. The acceptable maximum altitude display difference for RVSM airspace is indeed 200 feet, which means that the altitude readings from two aircraft operating in RVSM airspace must not differ by more than this amount to ensure safety and compliance with air traffic management requirements.

Thus, the correct response accurately recognizes the established standard for altitude reporting in RVSM airspace for the Envoy 175, which adheres to these regulations.