An emergency egress system typically (4) consists of an emergency egress door (6), an emergency egress window (8) and an emergency exit fire door (10). An emergency egress system typically (4) also has an emergency exit stairwell (9) for expediently evacuating passengers/crew members from an aircraft in case of an emergency. Most emergency egress systems have two doors; one emergency door and one standard door. One way to increase security is to add a bar or other obstruction in the emergency exit door to prevent unauthorized entry.
Emergency Egress systems are designed to provide passengers or crew members an opportunity to leave an aircraft in an appropriate fashion. Such systems typically incorporate features that allow emergency crews to control the initiation and landing of an emergency exit. There are four types of emergency egress systems – primary release, secondary release, rapid descent and emergency forced evacuation. Each type of emergency exit has its own characteristics including: location, number of doors and door arrangements. For purposes of simplification, the term “exit” will be used to refer to the location where an exit door would be located in an emergency evacuation scenario.
Primary release emergency egress systems provide passengers with a means of exit from the aircraft by opening one or more emergency doors. Typically, such systems can be activated either manually or automatically. Emergency egress systems can have a manual override, a series of buttons or a series of electronic signals. The button or signal may be used to start or stop emergency lowering of the chute. The emergency chute could then be deployed and the emergency doors opened, one at a time.
Emergency window systems are another type of emergency egress system. These window systems are installed in a passenger area to provide an alternate exit for an emergency flight. Most window systems are controlled by emergency descent and retrieval systems. The emergency descent system lowers the window emergency hatch to the ground and opens it while the emergency slide is deployed to help secure the window. When the slide is deployed, the window is secured and the emergency exit hatch opened. This allows passengers an easy way out of the aircraft.
A facilitating emergency egress system (also known as a jump} has an added benefit of providing a safer exit for emergency crews. It also helps to provide a more humane way to evacuate a small aircraft. A facilitating emergency egress system provides two entrances – one from the top of the aircraft and one from the bottom. With this setup, emergency crews have an easier time evacuating a smaller aircraft using ladders. Also, when an aircraft is being used for a cargo run, having two exit doors rather than one will allow more room for the cargo to be loaded and that will increase the safety of the entire operation.
Many companies have started incorporating these emergency escape systems work into all their aircraft models. These companies have seen how well these emergency exit devices work and want to make them standard equipment on every model. In order for these emergency systems to work properly they need to be installed correctly. Most companies that sell these window systems will carefully measure the window size and the door installation required to ensure proper installation. In order for these systems to work effectively a good door must open and close properly – both in the up and down position.
For an example, the up/down position involves pulling the door all the way down and then deploying the emergency A-frame retainer. After the door has been done the emergency A-frame retainer is placed on top of the door is closed. Because the door is shut in the up position it will prevent the contents of the aircraft from being ejected out as well as the emergency A-frame Retainer will retain the contents of the door in place and prevent the emergency door from closing. When the emergency door has been deployed and is opening the emergency A-frames are guided through the opening and will hit both sides of the aircraft – preventing the contents from being thrown out.
Some of these doors also have window contacts, which can be manually locked and unlocked. The system will lock the contacts when the emergency door is opened so that the doors cannot accidentally open. Some of these doors are equipped with a magnetic clasp system that will latch onto the window. This ensures that the doors are latched into place and the window contacts cannot be moved. Once the aircraft has been cleared from the area where the crash took place, all doors should open properly once the emergency crew has notified the control room.