14 C.F.R. § 151.7
(a) Compliance with sponsorship requirements. The FAA authorizes the expenditure of funds under the Federal-aid Airport Program for airport planning and engineering or for airport development only if the Administrator is satisfied that the sponsor has met or will meet the requirements established by existing and proposed agreements with the United States with respect to any airport that the sponsor owns or controls.
(1) Agreements with the United States to which this requirement of compliance applies include—
(iv) Any AP-4 agreement made under the terminated Development Landing Areas National Defense Program and the Development Civil Landing Areas Program.
This requirement does not apply to assurances required under section 602 of the Civil Rights Act of 1964 (42 U.S.C. 2000d-1) and § 15.7 of the Federal Aviation Regulations (14 CFR 15.7).
(3) If a project is otherwise eligible under the Federal-aid Airport Program, a grant may be made to a sponsor who has not complied with an agreement if the sponsor shows—
(ii) That the following circumstances exist:
(a) The noncompliance consisted of a failure, through mistake or ignorance, to perform minor conditions in old agreements with the Federal Government; and
(b) The sponsor is taking reasonable action promptly to correct the deficiency or the deficiency relates to an obligation that is no longer required for the safe and efficient use of the airport under existing law and policy.
(b) Small proposals and projects. Unless there is otherwise a special need for U.S. participation, the FAA includes an advance planning and engineering proposal or an airport development project in the Federal-aid Airport Program only if—
(2) The project application involves more than $5,000 in U.S. funds.
Whenever possible, the sponsor must consolidate small projects on a single airport in one grant agreement even though the airport development is to be accomplished over a period of years.
(c) Previously obligated work. Unless the Administrator specifically authorizes it, no advance planning and engineering proposal or project application may include any planning, engineering, or construction work included in a prior agreement with the United States obligating the sponsor or any other non-U.S. public agency to do the work, and entitling the sponsor or any other non-United States public agency to payment of U.S. funds for all or part of the work.
(Secs. 1-15, 17-21, 60 Stat. 170, 49 U.S.C. 1120)
[Amdt. 151-8, 30 FR 8039, June 23, 1965, as amended by Amdt. 151-17, 31 FR 16524, Dec. 28, 1966; Amdt. 151-19, 32 FR 9220, June 29, 1967]