What is flight level 600?

(Instructor added note: FL 600 or Flight Level 600, means a flying altitude of 60,000 ft. MSL, for more details, check out this website .) Class B. Generally, airspace from the surface to 10,000 feet MSL surrounding the nation's busiest airports in terms of airport operations or passenger enplanements.



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This means the FAA has both authority and responsibility for airspace above FL600.

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feet to inches / inches to feet To convert between inches and feet use: 1 foot = 12 inches. 1 inch ˜ 0.08333 feet 1/12 of a foot.

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The maximum height that a commercial airplane is allowed to reach when they fly is 42,000 feet, as this is the universally approved maximum altitude. This max altitude for airplanes is known as the “service ceiling.” Most commercial air jets fly at such a high altitude because it is known to optimize efficiency.

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According to USA Today, the common cruising altitude for most commercial airplanes is between 33,000 and 42,000 feet, or between about six and nearly eight miles above sea level.

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Military Reconnaissance Aircraft: The Lockheed SR-71 Blackbird had a service ceiling of FL850 and routinely operated above FL600. Many other aircraft in this category (e.g. MiG-25, Tsybin RSR, U-2, RB-57F, M-17 and M-55) can also fly above FL600.

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Upper Class E airspace operations refer to those that take place over 60,000 feet above mean sea level (MSL) in the National Airspace System (NAS). Operations in upper Class E airspace have historically been limited due to the challenges faced by conventional fixed wing aircraft in reduced atmospheric density.

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Reduced vertical separation minimum (RVSM) is the reduction, from 2,000 feet to 1,000 feet, of the standard vertical separation required between aircraft flying between flight level 290 (29,000 ft) and flight level 410 (41,000 ft).

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Over the course of less than six minutes, the plane descended 18,000 feet, ultimately moving from flying at 30,000 feet to a level closer to 10,000 feet.

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