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The stairs are often built into a clamshell-style door on the aircraft. Airstairs eliminate the need for passengers to use a mobile stairway or jetway to board or exit the aircraft, providing more independence from ground services. Some of the earliest aircraft to feature airstairs were the Martin 2-0-2 and Martin 4-0-4.
The helicopter hovers in very close proximity to the top of the structure. The power line technician transfers from the hovering helicopter to the structure. Various safety procedures are employed during the transfer.
In the United States, following three hijackings in 1972, the Federal Aviation Administration ordered that Boeing 727 aircraft be fitted with Cooper vanes. [2] The device was named for an unidentified airplane hijacker dubbed D. B. Cooper, who used the rear airstair to exit a Boeing 727 in flight and make a parachute escape.
The way that the balcony or vestibule is ventilated divides smokeproof enclosures into two basic types: mechanically ventilated which is not actually a smokeproof enclosures, where the vestibule and stairwell are ventilated by mechanical equipment, and naturally ventilated open air smokeproof enclosures where the open balcony or vestibule [or ...
A staircase or stairway is one or more flights of stairs leading from one floor to another, and includes landings, newel posts, handrails, balustrades, and additional parts. [4] In buildings, stairs is a term applied to a complete flight of steps between two floors. A stair flight is a run of stairs or steps
In most industrial countries, the aerospace industry is a co-operation of the public and private sectors. For example, several states have a civilian space program funded by the government, such as National Aeronautics and Space Administration in the United States, European Space Agency in Europe, the Canadian Space Agency in Canada, Indian Space Research Organisation in India, Japan Aerospace ...
United Airlines planes lined up at their jet bridges at Denver International Airport in March 2014. A jet bridge (also termed jetway, [1] jetwalk, airgate, jetty, gangway, planeplank, aerobridge/airbridge, finger, skybridge, airtube, expedited suspended passenger entry system (E-SPES), or its official industry name passenger boarding bridge (PBB)) is an enclosed connector which most commonly ...
The spiral staircase is a rectangular tube of 18 cranked facets in aluminium panels punctuated by small porthole windows. Two diagonally trussed steel walkways provide stability and access to the concrete shaft. The fire stair extends from the roof of the base building to a balcony – with an external platform – below the amenities/services ...