Civil aviation is a socio-technical system in which high risk, complex operations, advanced technology, and intensive human interaction coexist. In this system, ensuring safety is possible not only through technical competence but also through the effective management of processes related to human factors. Within the ecosystem of complex flight operations -where safety is paramount and the margin for error is virtually nonexistent- responsibility and initiative emerge as indispensable human attributes. These two concepts are often conflated. Although they are frequently addressed together in the literature and used side by side at the operational level, the boundaries and distinctions between them have not been clearly defined.

Although initiative and responsibility are mutually reinforcing concepts, there is a critical distinction between them. Responsibility refers to the obligation to assume the consequences of decisions made, to demonstrate accountability, and to carry out corrective actions; it possesses a more structural and reactive character, defined within the framework of regulations and job descriptions. Initiative, on the other hand, is the competence to make timely and appropriate decisions in order to preserve safety under conditions of uncertainty and time pressure, in alignment with procedures and situational awareness; it represents a proactive form of behavior. Therefore, initiative is oriented toward the moment of decision and the period preceding action, whereas responsibility focuses on post-action processes and professional accountability.

On the other hand, regulatory frameworks in civil aviation, such as Standard Operating Procedures (SOP) and the Safety Management System (SMS), define responsibility at the legal and organizational levels, while the boundaries of initiative remain less clearly delineated. Initiative often appears to reside within a “gray area” that emerges in situations not anticipated by procedures and that is shaped by context. This ambiguity becomes particularly visible in crisis, emergency, and abnormal situations.

This chapter examines the relationship between the concepts of responsibility and initiative in the context of flight operations by addressing human-centered decision-making processes from an organizational behavior perspective. In light of international regulations and recent scientific studies, it analyzes how these two concepts are shaped within operational decision-making processes, their similarities and points of divergence, and their reflections in operational practices.