<P> By keeping the height of the castle's spire under 200 feet (61 m) tall, the castle at Walt Disney World was able to avoid Federal Aviation Administration (FAA) regulations that would require flashing aircraft warning lights at the top . The two taller attractions at Walt Disney World, The Twilight Zone Tower of Terror and Expedition Everest, top out at 199 and 199.5 feet, respectively, to avoid this requirement as well . </P> <P> As a result of the September 11, 2001 attacks, amid concerns that general aviation could pose a threat to public safety, the FAA placed a permanent Temporary Flight Restriction (TFR) over the entire Walt Disney World Resort in Orlando, Florida . The flight restriction extends outward from an island near the Contemporary Resort (28 ° 24 ′ 45" N 81 ° 34 ′ 20" W ﻿ / ﻿ 28.41250 ° N 81.57222 ° W ﻿ / 28.41250; - 81.57222) at a radius of 3 nautical miles (5.6 km; 3.5 mi) up to 3,000 feet (910 m) above the ground level surface . Cinderella Castle is used as a visual reference . It has been a common growing legend that Disney chose to prohibit aviation above the park in order to make visitors feel even further separate from the outside world, but the true reason was, in fact, in response to the September 11th attacks . Law enforcement and Walt Disney World Cessna 172 aircraft, however, are exempt from this TFR . </P> <P> As Cinderella Castle is a Disney icon, it and Disneyland's Sleeping Beauty Castle have become the basis for the logo of Walt Disney Pictures, Walt Disney Television, Disney Music Group and Walt Disney Studios Motion Pictures . It was also heavily featured in advertisements for the Wonderful World of Disney, formerly shown on the Disney Channel . </P>

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