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Class C airspace is denoted by a heavy magenta border. Each distinct segment of class C airspace contains figures indicating the upper and lower altitude limits of that segment in units of one hundred feet, shown as a fraction, e.g., 100 over 40 indicates a ceiling of 10,000 feet (3,000 m) MSL and a floor of 4,000 feet (1,200 m) MSL.
Airspace class is a category used to divide the sky into different zones, ... The low-level speed limit of 250 knots (460 km/h; 290 mph) does not apply above 10,000 ...
The Los Angeles ARTCC controls 177,000 square miles (460,000 km 2) of airspace over southern and central California, southern Nevada, southwestern Utah, and western Arizona. [1] It controls airspace from the surface up to FL600 (60,000 feet).
Class A airspace is generally the airspace from 18,000 feet (~3.4 miles, 5.5 km) mean sea level (MSL) up to and including flight level (FL) 600 (~11.4 miles, 18.3 km), including the airspace overlying the waters within 12 nautical miles (NM) (~13.8 miles, 22.2 km) of the coast of the 48 contiguous states and Alaska. Unless otherwise authorized ...
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Have you seen a “speed enforced by aircraft” sign? Here’s what it means
Additional speed ranges are specified for other segments of the approach. [1]: Table II-5-1-2 Table II-5-1-2 Approach plates generally include visibility requirements up to category D. [ 1 ] : II-5-1-3 While ICAO specify a top speed of 391 km/h for Category E, there exist no aircraft with an approach speed above this.