RVSM applies to which range of flight levels?

RVSM applies to which range of flight levels?

• A. FL300 to FL420
• B. FL290 to FL410
• C. FL240 to FL410
• D. Below FL290 only

Answer: (B)

RVSM reduces vertical separation to 1000 feet within a specific mid‑altitude band, from FL290 through FL410. In this range, aircraft must be equipped and certified with two independent altitude-keeping systems so ATC can safely assign 1000-foot steps. Outside this band, the standard 2000-foot separation applies and RVSM requirements don’t apply. So the range that matches RVSM applicability is FL290 to FL410 inclusive. The other ranges start below, extend above, or exclude part of this band, which is why they’re not correct.

RVSM reduces vertical separation to 1000 feet within a specific mid‑altitude band, from FL290 through FL410. In this range, aircraft must be equipped and certified with two independent altitude-keeping systems so ATC can safely assign 1000-foot steps. Outside this band, the standard 2000-foot separation applies and RVSM requirements don’t apply. So the range that matches RVSM applicability is FL290 to FL410 inclusive. The other ranges start below, extend above, or exclude part of this band, which is why they’re not correct.