Which flight level is not included in the RVSM three levels above FL 290?

Which flight level is not included in the RVSM three levels above FL 290?

• A. FL 280
• B. FL 300
• C. FL 320
• D. FL 340

Answer: (A)

The correct answer is based on the concept of Reduced Vertical Separation Minimum (RVSM), which is applicable to airspace typically above Flight Level (FL) 290. RVSM allows aircraft to operate at 1,000-foot vertical separations between flight levels in this airspace. When discussing flight levels "three levels above FL 290," this means we start counting from FL 290 upwards. The levels would thus be FL 290, FL 300, FL 310, and FL 320. Consequently, FL 280 is not included as it is actually below FL 290 and doesn't meet the criteria of being "above" FL 290. This means that the other flight levels mentioned (FL 300, FL 320, and FL 340) are all part of RVSM operations, while FL 280 falls outside this range and is not part of those levels that are influenced by RVSM, as it operates in airspace that is separated by larger vertical distances. Therefore, FL 280 is the only flight level listed that is not part of the RVSM three levels above FL 290.

The correct answer is based on the concept of Reduced Vertical Separation Minimum (RVSM), which is applicable to airspace typically above Flight Level (FL) 290. RVSM allows aircraft to operate at 1,000-foot vertical separations between flight levels in this airspace.

When discussing flight levels "three levels above FL 290," this means we start counting from FL 290 upwards. The levels would thus be FL 290, FL 300, FL 310, and FL 320. Consequently, FL 280 is not included as it is actually below FL 290 and doesn't meet the criteria of being "above" FL 290.

This means that the other flight levels mentioned (FL 300, FL 320, and FL 340) are all part of RVSM operations, while FL 280 falls outside this range and is not part of those levels that are influenced by RVSM, as it operates in airspace that is separated by larger vertical distances. Therefore, FL 280 is the only flight level listed that is not part of the RVSM three levels above FL 290.