Note to editors on how to manage collapsibility:

• Use {{Lists of aviation accidents and incidents|state=collapsed}} to show this template in its collapsed (hidden) state.
• Use {{Lists of aviation accidents and incidents|state=expanded}} to show this template in its expanded (fully visible) state.
• Use {{Lists of aviation accidents and incidents|state=autocollapse}} to show this template in its collapsed (hidden) state only if there is another template of the same type on the page. (This is usually the default.)