Team Resource Management (TRM) is defined as: Strategies for the best use of all available resources - information, equipment and people - to optimise the safety and efficiency of Air Traffic Services.
By the early 1990s, the corresponding concept of Crew Resource Management (CRM) had been embodied in flight crew training by among aircraft operators for many years and there was already good evidence to show that those programmes had been successful in reducing accident and incident rates. TRM was identified as a way of following CRM principles and both, along with the more recent Maintenance Resource Management (MRM), have now been embraced in the wider context of safety management as interventions that defend aircraft operations against common causes of system failure.