How many major aviation incidents have occurred this year and what patterns has Anthony Roman observed?

According to aviation expert Anthony Roman, this marks the third major aviation incident of consequence this year. Roman has tracked aviation accidents for years and has observed an unusual pattern where incidents tend to occur in groups of three. He describes this as "an unusual set of affairs" and notes that while there's no formal study regarding this pattern, it's a phenomenon he has consistently noticed throughout his career monitoring aviation safety. This clustering of incidents represents a curious trend in the aviation industry.