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Airplane cockpit seat background1/1/2024 HIC measures the likelihood of head injury resulting from an impact. Where head contact with seats or other structure can occur, Boeing provides protection so that the head impact does not exceed the head injury criterion (HIC) established by the U.S. The highest load factor is in the forward direction at a force of 16g. Two separate dynamic tests are conducted to simulate two different accident scenarios: one in which the forces are predominantly in the vertical downward direction and one in which the forces are predominantly in the longitudinal forward direction. A 16g seat is tested in a manner that simulates the loads that could be expected in an impact-survivable accident. Today’s seats are required to withstand a 16g dynamic force. For commercial jet airplanes beginning in the 1950s, the 6g requirement was raised to 9g. In the 1930s, passenger airplane seats could withstand a static force six times the force of gravity (6g). In addition, the seat back is designed to protect passengers behind the seat from head injury. The greater the ability of airplane seats to remain in place and absorb energy during an impact, the greater the likelihood of passenger survival. Survivability is greatly influenced by seat design. The industry’s work on airplane safety and survivability of airplane interiors emphasizes three areas: surviving impact, surviving a fire, and evacuation. There were 125 survivors among the 127 passengers and crew aboard the flight. In August 2010, an airplane crashed while attempting to land during poor weather, breaking into three pieces on impact.In December 2009, an airplane carrying 154 passengers and crew overran the runway during a landing in heavy rain and broke apart.There were no fatalities among the 115 passengers and crew, even though the metal fuselage had been breached by fire. In December 2008, an airplane crashed while taking off, ending up on fire in a 40-foot-deep ravine several hundred yards from the runway.Some recent events highlight the safety of today’s passenger jet airplane interiors during takeoff and landing accidents. For example, Boeing has worked continuously to enhance the safety of its products and to lead the industry to higher levels of safety through global collaboration.īoeing airplane interiors have become both more comfortable and safer over time.īy working together, regulators, operators, and manufacturers can maximize safety by sharing knowledge and targeting safety efforts to address areas with the most risk. Since the first passenger airplane was introduced in the 1930s, airplane manufacturers have worked to make airplanes safer for the passengers and crew who fly in them (see fig. 1). A history of improving airplane interiors This article provides examples of significant interior enhancements to Boeing airplanes and how they enhance airplane safety, particularly during accidents that occur during takeoffs and landings. This decrease is due in part to continuing efforts by airplane manufacturers and regulators to use information gained from accidents to develop safer, more survivable airplanes. The accident fatality rate for jet airplanes has fallen dramatically during the last 50 years.
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