What is the maximum cruise Mach in RVSM airspace?

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Multiple Choice

What is the maximum cruise Mach in RVSM airspace?

Explanation:
In RVSM airspace, the system is set up to maintain very tight vertical separation between flight levels, which requires precise altitude control. To keep that precision reliable across the fleet, there is a published cap on how fast aircraft are allowed to cruise. The standard upper limit is 0.82 Mach. Many large jetliners operate around 0.78 to 0.82 Mach in RVSM, balancing efficiency with the need for accurate altitude keeping. Going faster than 0.82 Mach can increase altitude-keeping errors and challenge the required 1000 ft vertical separation, so speeds beyond this limit aren’t permitted in RVSM airspace. Therefore, the maximum cruise Mach in RVSM airspace is 0.82.

In RVSM airspace, the system is set up to maintain very tight vertical separation between flight levels, which requires precise altitude control. To keep that precision reliable across the fleet, there is a published cap on how fast aircraft are allowed to cruise. The standard upper limit is 0.82 Mach. Many large jetliners operate around 0.78 to 0.82 Mach in RVSM, balancing efficiency with the need for accurate altitude keeping. Going faster than 0.82 Mach can increase altitude-keeping errors and challenge the required 1000 ft vertical separation, so speeds beyond this limit aren’t permitted in RVSM airspace. Therefore, the maximum cruise Mach in RVSM airspace is 0.82.

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