(D)
With respect to the period beginning on the first date more than 50 percent of the interest of the United States in the Corporation has been sold through public offering and ending when 100 percent of such interest has been sold—
(i)
all remaining members of the board referred to in paragraph (2)(A)(iii), and
(ii)
with respect to the period ending June 30, 1987, all remaining members of the board, except 3 members appointed by the Secretary of Transportation and the Chief Executive Officer and the Chief Operating Officer of the Corporation,
shall be replaced by directors elected by the public shareholders of the Corporation.