Some remarks about LOC.
Based on a dataset of over 1500 accident and incident cases for the 1960-2018 period (based on accident reports and complemented with validated public and other data) I would say:
- that the absolute number of cases with LOC as a factor has not changed much over the years. An average number is about 2.75 per year.
- relatively speaking, compared to the huge increase in traffic, this means that the probability of LOC as a factor has significantly decreased,
- that the absolute number of LOC fatalities increased from the 1960s onward, peaked in the 1990s, and then decreased.
- relatively speaking, compared to the huge increase in traffic, this means that the probability of fatalities has significantly decreased,
- that the percentage of LOC cases fatalities which are "all-fatal" decreased from the 1960s onward, found a bottom in the 1990s, and then increased again.
- so the probability today that you end up in a LOC situation has significantly decreased, but if you are in such a situation that the "all-fatal" probablity has increased.
You have to take statements like this as a rough indication, no more no less.
Accident reports over the years and between countries are not very precise in providing consistent comparable and detailed data.
Accident reports are not always publicly available. Recent cases have no report yet.
Another thing is cause. Aerospace accidents never have a single cause. And LOC is even more an outcome than a causal factor.
etcetera.