Depends what's classified by an "incident". Aviation has "incidents" all the time. And yet we are not grounding planes based on this. We learn about them, and improve.
The key thing that makes aviation safe is not treating low-level incidents as OK just because they haven't turned into major incidents. One of the major, repeated root causes of catastropic failures in nominally robust, redundant and safe systems, across multiple industries, is the normalization of deviance - the acceptance of safety failings because they haven't lead to a critical disaster yet. The more I hear from nuclear advocates, the more convinced I've become that pro-nuclear advocacy is fundamentally incompatible with the existence of safe nuclear power plants, if that is even possible.