...BUENOS AIRES (S&P Global Ratings) Dec. 21, 2018--S&P Global Ratings said today that its '###+' ratings on the Mexico City Airport Trust (Fideicomiso 80460) are unaffected following the announcement of its cash tender offer and consent solicitation results. The ratings remain on CreditWatch with negative implications, where we placed them on Oct. 31, 2018. Yesterday the trust communicated that holders of 70.8% of the aggregate principal amount all the four series of outstanding notes had validly tendered pursuant to the offer, and 71.3% delivered their consents accorded to the solicitation released on Dec. 3 and amended on Dec. 11. As a result, the Mexico City Airport Trust has accepted for purchase notes tendered on a pro rata basis according to the pro ration procedures described in the documentation. In practice, the trust will accept for purchase $299.99 million of the principal amount of its 2026 notes, $300 million of the principal amount of both its 2028 and 2046 notes, and $899.99...