In the United States, the Federal Aviation Administration (FAA) is deeply involved in improving aviation safety by integrating human factors into aircraft certification processes. Their specialists focus on reducing human error and optimizing human performance in aircraft systems, maintenance, and operations.
One key tool developed by the FAA is the Human Factors Design Standard (HFDS), which provides comprehensive guidelines to ensure human factors principles are applied throughout aircraft development and certification. This helps create safer, more reliable aircraft by considering pilot and technician interactions with systems from the earliest design stages.
The integration of human factors principles into aircraft certification aligns with the objectives of the DEMOQUAS project, which aims to enhance aviation safety by better understanding and managing uncertainties in aircraft and engine design.
More here: https://www.faa.gov/aircraft/air_cert/design_approvals/human_factors