Operations within airspace designated as Reduced Vertical Separation Minimum airspace

This regulation governs operations in RVSM (Reduced Vertical Separation Minimum) airspace, where aircraft are separated by only 1,000 feet vertically between FL290 and FL410, instead of the traditional 2,000 feet. This allows more efficient use of high-altitude airspace.

To operate in RVSM airspace, both you and your aircraft must meet specific equipment and performance standards detailed in Appendix G of Part 91. These standards ensure your altimetry system is accurate enough for the reduced separation. Additionally, you must have authorization from either the FAA or your aircraft's country of registry to conduct RVSM operations.

In practice, this means most modern aircraft flying at these altitudes need RVSM approval, which involves equipment requirements, maintenance programs, and operational procedures. The Administrator can grant deviations from these requirements when appropriate. Non-RVSM aircraft must typically fly at non-RVSM flight levels or request special handling from ATC.

*This is a plain-English summary for study only. The official 14 CFR text on this page is controlling — always read the current regulation and consult a CFI.*