PurposeThe purpose of this paper is to describe the results of research into the support activities of commercial aircraft (A/C).Design/methodology/approachThe work is associated with A/C operations (OPS) providing a structure establishing the A/C sustaining during the in‐service phase. The process involved the implementation of a field survey in order to capture heuristically A/C support practices to enable one to identify system requirements. This part of the work utilized the collaboration of 21 A/C operators and maintenance repair and overhaul companies from various regions of the world.FindingsUsing systems engineering methodology, the research process led to the development of a prototype sustaining system. The solution comprises a tree of support functionalities (similar to a work breakdown structure). The result was verified by major local national airlines which confirmed the ability of the solution in terms of representing a viable structure establishing an A/C sustaining system.Originality/valueThe research initiative presented represents a contribution in the domain of A/C OPS, namely in terms of management aspects, by making available a solution that serves as a reference element, with a holistic nature, that integrates, normalizes and unifies commercial A/C support practices.