page_title: Evacuation slide
section_title: Over-wing / window exits
hierarchical_section_title: Evacuation slide / Over-wing / window exits
caption_attribution_description: Notrutsche in verpacktem Zustand A packed evacuation slide
context_page_description: Federal Aviation Administration and EASA regulations require an approved method of escape on all aircraft exits where the floor is 6 feet or more above the ground. There are also design requirements for passengers to be able to evacuate within certain limits; typically 90 seconds for large aircraft. An evacuation slide is an inflatable slide that both allows people to descend safely from the exit and has a sufficiently high use rate to meet the evacuation timings. Escape slides are the reference means of compliance with the regulation although some cargo aircraft use different methods.
context_section_description: All large commercial aircraft have escape slides on the main doors but some also have slides for exits over the wings. These include the Boeing 767, Boeing 757, and Airbus A320-series aircraft. Typically, overwing evacuation slides are not designed for use in ditching situations as they cannot be detached.  and will not operate, as the system is disabled by the aspirators on the slide taking in water.  Aircraft where there is no over-wing slide, such as the Embraer 190, 717, and 737 do not require them by regulation because when the flaps are fully lowered, they are low enough to the ground to meet the requirement. 
  Window exits usually come in two configurations:
  An unhinged hatch type exit, where the hatch is unlocked from the inside and pulled into the cabin, whereupon it can be disposed. Some carriers recommend placing the hatch onto the adjacent seats, while others may recommend dropping it in the next seat row, or rotating the exit and throwing it outside the aircraft as far forward as possible. A manual inflation handle for the evacuation slide, if equipped, can be found in the window frame. Most aircraft overwing exits are of this type.
  A hinged self-disposing exit hatch, that opens automatically outward using a spring when the exit handle is pulled. This exit design was designed in response to research generated after the Manchester air disaster in 1985 which indicated that unhinged hatch type exits were difficult to open by untrained passengers. This design is currently found only on Boeing 737 NG aircraft.
  Window exits are usually equipped with ditching or life lines. These may be attached to the inside frame of the window exit, or located in a nearby storage locker. One end has a buckle to connect to attachments on the aircraft's wings.
caption: A packed evacuation slide
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