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Special Flight Rules Area
In United States aviation, a special flight rules area (SFRA) is a region in which the normal regulations of flight do not apply in whole or in part, especially regulations concerning airspace classification, altitude, course, and speed restrictions, and the like. Washington, DC Special Flight Rules Area Following the terrorist attacks of September 11, 2001, the airspace around Washington DC underwent a number of changes designed to restrict flying around the city. In 2003, a temporary flight rules area was created and was named the Washington DC Air Defense Identification Zone. In 2008 the temporary status of the ADIZ was removed and the rule was made permanent. In order to fly within the DC SFRA, pilots of general aviation aircraft are required to file a special flight rules flight plan, obtain a discrete transponder code, and remain in contact with air traffic control at all times. Special training is required in order to fly within 60 nm of the Washington DC ( KDCA ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Airspace
Airspace is the portion of the atmosphere controlled by a country above its territory, including its territorial waters or, more generally, any specific three-dimensional portion of the atmosphere. It is not the same as aerospace, which is the general term for Earth's atmosphere and the outer space in its vicinity. Within the United States: * Controlled airspace exists where it is deemed necessary that air traffic control has some form of positive executive control over aircraft flying in that airspace (however, air traffic control does not necessarily control traffic operating under visual flight rules (VFR) within this airspace). Airspace may be further subdivided into a variety of areas and zones, including those where there are either restrictions on flying activities or complete prohibition of flying activities. Horizontal boundary By international law, a state "has complete and exclusive sovereignty over the airspace above its territory", which corresponds with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hudson River
The Hudson River is a river that flows from north to south primarily through eastern New York. It originates in the Adirondack Mountains of Upstate New York and flows southward through the Hudson Valley to the New York Harbor between New York City and Jersey City, eventually draining into the Atlantic Ocean at Lower New York Bay. The river serves as a political boundary between the states of New Jersey and New York at its southern end. Farther north, it marks local boundaries between several New York counties. The lower half of the river is a tidal estuary, deeper than the body of water into which it flows, occupying the Hudson Fjord, an inlet which formed during the most recent period of North American glaciation, estimated at 26,000 to 13,300 years ago. Even as far north as the city of Troy, the flow of the river changes direction with the tides. The Hudson River runs through the Munsee, Lenape, Mohican, Mohawk, and Haudenosaunee homelands. Prior to European ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elmendorf AFB
Elmendorf Air Force Base is a United States Air Force (USAF) facility in Anchorage, Alaska. Originally known as Elmendorf Field, it became Elmendorf Air Force Base after World War II. It is the home of the Headquarters, Alaskan Air Command (ALCOM), Alaskan NORAD Region (ANR), Eleventh Air Force (11 AF), the 673d Air Base Wing, the 3rd Wing, the 176th Wing and other tenant units. In 2010 it was amalgamated with nearby Fort Richardson to form Joint Base Elmendorf-Richardson. The adjacent facilities were officially combined by the 2005 Base Closure and Realignment Commission. Its mission is to support and defend U.S. interests in the Asia-Pacific region and around the world by providing units who are ready for worldwide air power projection and a base that is capable of meeting United States Pacific Command's theater staging and throughput requirements. Units The installation hosts the headquarters for the United States Alaskan Command, 11th Air Force, U.S. Army Alaska, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anchorage International Airport
Ted Stevens Anchorage International Airport is a major airport in the U.S. state of Alaska, located southwest of downtown Anchorage. The airport is named for Ted Stevens, a U.S. senator from Alaska in office from 1968 to 2009. It is included in the Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2017–2021, in which it is categorized as a medium-hub primary commercial service facility. History Built in 1951, the airport was served in the 1950s by Alaska Airlines, Northwest Orient, Pacific Northern Airlines and Reeve Aleutian Airways, using aircraft ranging from Douglas DC-3s to Boeing 377s, and was also a refueling stop for Canadian Pacific Air Lines service to the Far East (one such aircraft being involved in a 1951 disappearance). From 1955 to 2011, the eastern end of the airport's southernmost runway connected to the Kulis Air National Guard Base. By the mid-1980s the airport's nickname was "Crossroads of the World". Anchorag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Class C Airspace
The world's navigable airspace is divided into three-dimensional segments, each of which is assigned to a specific class. Most nations adhere to the classification specified by the International Civil Aviation Organization (ICAO) and described below, though they might use only some of the classes defined below, and significantly alter the exact rules and requirements. Similarly, individual nations may also designate special use airspace (SUA) with further rules for reasons of national security or safety. Abbreviations used in this article ICAO definitions On March 12, 1990, ICAO adopted the current airspace classification scheme. The classes are fundamentally defined in terms of flight rules and interactions between aircraft and air traffic control (ATC). Generally speaking, the ICAO airspaces allocate the responsibility for avoiding other aircraft, namely either to ATC (if separation is provided) or to the aircraft commander (if not). Some key concepts are: * Separation: Ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eglin Air Force Base
Eglin Air Force Base is a United States Air Force (USAF) base in the western Florida Panhandle, located about southwest of Valparaiso in Okaloosa County. The host unit at Eglin is the 96th Test Wing (formerly the 96th Air Base Wing). The 96 TW is the test and evaluation center for Air Force air-delivered weapons, navigation and guidance systems, command and control systems, and Air Force Special Operations Command (AFSOC) systems. Eglin AFB was established in 1935 as the Valparaiso Bombing and Gunnery Base. It is named in honor of Lt. Col. Frederick I. Eglin who was killed in a crash of his Northrop A-17 attack aircraft on a flight from Langley to Maxwell Field, Alabama. History Creation and World War II Much of the base was part of a national forest until the outbreak of World War II in Europe when a proving ground for aircraft armament was established at Eglin. The U.S. Forest Service ceded over 340,000 acres of the Choctawhatchee National Forest to the War Dep ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Valparaiso, Florida
Valparaiso is a city in Okaloosa County, Florida, United States. As of the 2010 census, the city population was 5,036. According to the U.S. Census Bureau's 2018 estimates, the city had a population of 5,195. It is part of the Fort Walton Beach– Crestview– Destin Metropolitan Statistical Area. History Valparaiso was named after Valparaiso, Indiana (which was named after Valparaiso, Chile) and is a twin city also with its neighboring city, Niceville. Chicago businessman James E. Plew, who relocated to the panhandle of northwest Florida in 1922, became "one of Northwest Florida's pioneer developers,"''Okaloosa News-Journal'', Crestview, Florida, "Jas. Plew, Business Man, Dies", Friday, April 22, 1938, Volume 24, Number 17, page 1. and settled on Valparaiso "as the most likely spot for development. He founded the Bank of Valparaiso, constructed the Valparaiso Inn n 1924 organized the Chicago Country Club which constructed the Valparaiso Country Club golf course ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ketchikan, Alaska
Ketchikan ( ; tli, Kichx̱áan) is a city in and the borough seat of the Ketchikan Gateway Borough of Alaska. It is the state's southeasternmost major settlement. Downtown Ketchikan is a National Historic District. With a population at the 2020 census of 8,192, up from 8,050 in 2010, it is the sixth-most populous city in the state, and thirteenth-most populous community when census-designated places are included. The surrounding borough, encompassing suburbs both north and south of the city along the Tongass Highway (most of which are commonly regarded as a part of Ketchikan, albeit not a part of the city itself), plus small rural settlements accessible mostly by water, registered a population of 13,948 in that same census. Incorporated on August 25, 1900, Ketchikan is the earliest extant incorporated city in Alaska, because consolidation or unification elsewhere in Alaska resulted in the dissolution of those communities' city governments. Ketchikan is located on Revillag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grand Canyon
The Grand Canyon (, yuf-x-yav, Wi:kaʼi:la, , Southern Paiute language: Paxa’uipi, ) is a steep-sided canyon carved by the Colorado River in Arizona, United States. The Grand Canyon is long, up to wide and attains a depth of over a mile (). The canyon and adjacent rim are contained within Grand Canyon National Park, the Kaibab National Forest, Grand Canyon–Parashant National Monument, the Hualapai Indian Reservation, the Havasupai Indian Reservation and the Navajo Nation. President Theodore Roosevelt was a major proponent of the preservation of the Grand Canyon area and visited it on numerous occasions to hunt and enjoy the scenery. Nearly two billion years of Earth's geological history have been exposed as the Colorado River and its tributaries cut their channels through layer after layer of rock while the Colorado Plateau was uplifted. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Queensboro Bridge
The Queensboro Bridge, officially named the Ed Koch Queensboro Bridge, is a cantilever bridge over the East River in New York City. Completed in 1909, it connects the neighborhood of Long Island City in the borough of Queens with the Upper East Side in Manhattan, passing over Roosevelt Island. The bridge is also known as the 59th Street Bridge because its Manhattan end is located between 59th and 60th streets. The Queensboro Bridge carries New York State Route 25 (NY 25), which terminates at the bridge's western end in Manhattan, and also once carried NY 24 and NY 25A. The western leg of the Queensboro Bridge is flanked on its northern side by the freestanding Roosevelt Island Tramway. The bridge was, for a long time, simply called the Queensboro Bridge, but in March 2011, the bridge was officially renamed in honor of former New York City mayor Ed Koch. The Queensboro Bridge is the northernmost of four toll-free vehicular bridges connecting Manhattan Island to Long Isla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
East River
The East River is a saltwater tidal estuary in New York City. The waterway, which is actually not a river despite its name, connects Upper New York Bay on its south end to Long Island Sound on its north end. It separates the borough of Queens on Long Island from the Bronx on the North American mainland, and also divides Manhattan from Queens and Brooklyn, also on Long Island.Hodges, Godfrey. "East RIver" in Jackson, pp.393–93 Because of its connection to Long Island Sound, it was once also known as the ''Sound River''. The tidal strait changes its direction of flow frequently, and is subject to strong fluctuations in its current, which are accentuated by its narrowness and variety of depths. The waterway is navigable for its entire length of , and was historically the center of maritime activities in the city. Formation and description Technically a drowned valley, like the other waterways around New York City, the strait was formed approximately 11,000 years ago at the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Verrazzano-Narrows Bridge
The Verrazzano-Narrows Bridge ( ) is a suspension bridge connecting the New York City boroughs of Staten Island and Brooklyn. It spans the Narrows, a body of water linking the relatively enclosed New York Harbor with Lower New York Bay and the Atlantic Ocean. It is the only fixed crossing of the Narrows. The double-deck bridge carries 13 lanes of Interstate 278: seven on the upper level and six on the lower level. The span is named for Giovanni da Verrazzano, who in 1524 was the first European explorer to enter New York Harbor and the Hudson River. Engineer David B. Steinman proposed a bridge across the Narrows in the late 1920s, but plans were deferred over the next twenty years. A 1920s attempt to build a Staten Island Tunnel was aborted, as was a 1930s plan for vehicular tubes underneath the Narrows. Discussion of a tunnel resurfaced in the mid-1930s and early 1940s, but the plans were again denied. In the late 1940s, urban planner Robert Moses championed a bridge acros ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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