CHICAGO (S&P Global Ratings) Jan. 11, 2018--S&P Global Ratings has corrected by lowering its rating on Metropolitan Transportation Authority, N.Y.'s series 2017C-2 (capital appreciation bonds) due 2027, 2029, 2032-2033, and 2039-2040 to 'AA-' from 'AA'. The outlook is stable. On Nov. 29, 2017, the enhanced bond insurance rating was applied to these maturities due to an administrative error; these maturities are not covered by a bond insurance policy. At the same time, S&P Global Ratings has corrected by withdrawing its 'AA-' underlying rating (SPUR) on the same bonds.