Passengers with Disabilities: Airport Accessibility Barriers and Practices and DOT's Oversight of Airlines' Disability-Related Training, Report to Congressional Committees [open pdf - 2MB]
From the Highlights: "Approximately 43 million people in the United States have some type of disability, which may affect mobility, vision, hearing, and cognition. Without accessible airport facilities and accommodations--such as appropriate assistance from the check-in counter to the gate, or effective communication of flight information--air travel for people with disabilities can be extremely challenging. The FAA [Federal Aviation Administration] Reauthorization Act of 2018 includes provisions for GAO [Government Accountability Office] to review leading airport accessibility practices for passengers with disabilities, as well as required training for airline and contract service personnel who assist these passengers within the airport. This report examines, among other objectives: stakeholder-identified barriers that passengers with disabilities face when accessing airport facilities, accessibility practices to assist passengers with disabilities, as well as how DOT [Department of Transportation] has overseen airlines' disability-related training."
Government Accountability Office: https://www.gao.gov/