This picture from AvHerald.
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Am guessing few, if any, here have opened the emergency exits on an airliner from the outside, or even possibly primary doors from outside for that matter, but there’s a funny story with it.
The 737 Jurassic (100/200) and Classic (300/400/500) use the standard plug-type doors for the overwing emergency exits. When opening them up from the outside, we’d actuate the door mechanism while being up close to the door, press it inward a bit, then remove the whole door assembly through the hole towards us, and place it on the wing forward of the opening, then proceed with whatever we were then going to do.
When the NG and later MAX came out (600 onward) the overwing exit featured a new design that was hinged on the top side and spring loaded as it opened outward and upward, remaining connected to the top of the exit opening, as can be seen here in the picture. When opening this door externally, we’d do the same thing manipulating the external opening handle, which unlocks the door, however there’s one key difference that needed to be done opening it from the outside, and that was to ground one boot on the wing top while pressing a knee into the door as the opening mechanism was being actuated. If one failed to do that and opened the actuator as they would a plug door on the Classic, the door would spring outward/upward, and the unfortunate firefighter would get the equivalent of a boxer’s uppercut punch to the gut as the spring mechanism did its thing. Was always funny to see happen to the uninitiated or those working too fast and not properly.
