In the field of public transport questions of accountability are often raised. This becomes especially apparent in the case of breakdowns and other disruptions. Actors in and beyond transport companies make themselves accountable and are held accountable by others: Who is responsible for the disruption? Who can be held accountable for repair? Who is in charge of organising repair and other means of rectifying disruptions? Drawing on STS and ethnomethodology, I will argue for a praxeological concept of accountability. Accountability is not a fixed state of individual or collective actors but a practically accomplished and technologically mediated relationship. Transport companies rely on various data practices and data infrastructures that distribute accountability between different actors within and beyond the organisation. Following this distributed normative work shows that data (practices) are the object of negotiations and conflicts between various actors. What is at stakes is the scale and scope of data and media.