Mexico City Airport Trust has launched the second phase of its capital markets debt raising effort. We're assigning our 'BBB+' preliminary issue ratings to the trust's new senior secured debt. We're also affirming our 'BBB+' issue-level ratings on the trust's existing notes. We expect the project to use the proceeds to partially finance the construction of the new Mexico City Airport. On Sept. 1, 2017, S&P Global Ratings affirmed its 'BBB+' issue-level ratings on the $2.0 billion senior secured debt issued by Mexico City Airport Trust (Fideicomiso 80460). We also assigned our 'BBB+' preliminary rating to the proposed senior secured debt to be issued by the trust. The outlook on all ratings is stable. The 'BBB+' rating on the trust's