(b) The Administrator and the sponsor may agree to a change in a grant agreement if—
(1) The change does not increase the maximum obligation of the United States under the grant agreement by more than 10 percent;
(2) The change provides only for airport development that meets the requirements of subparts B and C; and
(3) The change does not prejudice the interests of the United States.
(c) When a change is agreed to, the Administrator issues a supplemental agreement incorporating the change. The sponsor must accept the supplemental agreement in the manner provided in §151.29(c).
[Doc. No. 1329, 27 FR 12351, Dec. 13, 1962, as amended by Amdt. 151–8, 30 FR 8040, June 23, 1965]