The identified shortfalls in the quality of risk controls following serious incident investigations-including a 15% mismatch between contributory factors and aligned risk controls and 74% of proposed risk controls centering on weaker interventions-represent significant gaps in translating incident investigations into meaningful systemic improvements. Advancing the quality of risk controls after serious incident investigations will require involvement of human factors specialists in their design, a theory-of-change approach, evaluation, and curation and sharing of learning, all supported by a common framework.