armchairpilot94116
Websters definition of "Accident" works for me:
It may worik for you but it is not the way that aviation accidents or incidents are codified for the purpose of assessing safety.
For starters you might want to take a look at the definitions in the design intent FAR/JARs relative to part 25.1309 (system safety).
All of us would welcome a thorough collection of data for every event that fits those descriptions but in the interests of practicality in the available investigators time they rightly prioritize their investigative resources against
their definition of accident or serious incident.
The more minor stuff simply gets reported and is categorized accordingly. It is important that the data is codified against what actually happened and not against fanciful what-ifs. That way future designs can learn from the degree of successes at mitigating against catastrophic consequences for combinations of malfunctions and circumstances.