A bill to prevent the Iranian Islamic Revolutionary Guard Corps from using Mahan Air for material support for terrorist activities.

Mahan Air and Terrorism Prevention Act of 2017 This bill directs the Department of Homeland Security to submit an annual report to Congress through 2020 that includes: (1) a list of all airports at which aircraft owned or controlled by Mahan Air (a Tehran-based commercial airline under U.S. sanctions) have landed during the preceding two years; and (2) for each such airport, an assessment of whether such aircraft continue operations at that airport, an assessment of whether any of the landings were emergency landings, a determination of whether additional security measures should be imposed on flights to the United States that originate from that airport, and an explanation of the rationale for such determination.