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Airways are corridors 10 nautical miles (19 km) wide of controlled airspace with a defined lower base, usually FL070–FL100, extending to FL195. They link major airports giving protection to IFR flights during the climb and descent phases, and often for non-jet aircraft, cruise phase of flight.
Published VFR routes are for transitioning around, under, or through some complex airspace. Terms such as VFR flyway, VFR corridor, Class B airspace VFR transition route, and terminal area VFR route have been applied to such routes. These routes are generally found on VFR terminal area planning charts. [14]
These routes include “VFR Flyway”, “VFR Corridor”, and “Class B Airspace VFR Transition Route”. [7]: 3-5-5 VFR Flyway: a general flight path in planning flights inside or near complex terminal airspace to avoid Class B airspace. ATC clearances are not required. VFR corridor: defined corridor through class B airspace.
It usually happens when the aircraft is inside controlled airspace, and the local weather is less than the minimums required for flight under visual flight rules (VFR) within the airspace in question. [5] Note that an aircraft might be able to fly under SVFR even in Class A airspace, where instrument flight rules (IFR) flight is the norm. [6]
VFR requires a pilot to be able to see outside the cockpit to control the aircraft's altitude, navigate, and avoid obstacles and other aircraft. [3] Governing agencies establish specific requirements for VFR flight, including minimum visibility, and distance from clouds, to ensure that aircraft operating under VFR are visible from enough distance to ensure safety.
For VFR operations, victor airways are just a subset of so-called Federal airways (which also include so-called colored airways), which are designated as Class E, and hence are extended from 1,200 feet (370 m) above ground level (AGL) up to, but not including, 18,000 feet (5,500 m) above mean sea level (AMSL). [4] [5] [6]
Hudson and East River VFR corridor note on New York terminal area chart as of 2007. The East River Special Flight Rules Area (SFRA), formally known as the East River class-B exclusion, is a section of airspace above the East River in New York City in which flight is permitted under visual flight rules (VFR).
Military training routes are aerial corridors across the United States in which military aircraft can operate below 10,000 feet faster than the maximum safe speed of 250 knots that all other aircraft are restricted to while operating below 10,000 feet. The routes are the result of a joint venture between the Federal Aviation Administration and ...