Foreign Civil Aviation Authority Assistance Act of 2020 This bill provides Federal Aviation Administration (FAA) support for foreign civil aviation authorities. In addition to the current requirement that the FAA promote and achieve global improvements in the safety, efficiency, and environmental effect of air travel, the bill requires the FAA to engage both bilaterally and multilaterally, including with the International Civil Aviation Organization, to bolster international collaboration, data sharing, and harmonization of international aviation safety requirements. The FAA must seek to expand technical assistance in support of enhancing international aviation safety, and it is authorized to provide technical assistance related to all aviation safety-related training and operational services in connection with bilateral and multilateral agreements. The bill also authorizes support for the implementation of certain recommendations to address pilots' dependency on automation.