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en.m.wikipedia.org
en.m.wikipedia.org
Enacted in 1961 in the wake of the
1960 New York mid-air collision, FAR Part 91.85 mandated speed restrictions below 10,000 feet (3,000 m) within 30 nautical miles of a destination airport. After the accident involving Flight 553, all areas below 10,000 feet (3,000 m) were prohibited from exceeding 250 knots (290 mph; 460 km/h) IAS. The accident also influenced the
Federal Aviation Administration's decision to create
terminal control areas or TCAs (now called
Class B airspace) around the busiest airports in the country. The airspace around Dayton did not become a TCA, undergoing only minor changes until it was reclassified as
Class C airspace in the late 1980s.