Human factors is traditionally not well integrated within systems design. The Human factors Integration in Future ATM systems (HIFA) Project aims to redress this situation with respect to Air Traffic Management (ATM) projects. For each phase of the EATMP* life cycle the report identifies the key integration issues and specifies the human factors tasks to carry out and the checklist questions to ask. The roles and responsibilities required to implement the HIFA process are also detailed. The report discusses the application of the HIFA methodology to European ATM project development scenarios including initial feedback on the HIFA guidance material from a selection of ATM project managers. Project development scenarios are discussed and a list of ten scenarios proposed. * European Air Traffic Management Programme (formerly known as EATCHIP standing for European Air Traffic Harmonisation and Integration Programme)