The Acquisition Management System (AMS) provides policy and guidance on lifecycle acquisition management by the United States Federal Aviation Administration (FAA). The self-stated objectives of the AMS "are to increase the quality, reduce the time, manage the risk, and minimize the cost of delivering safe and secure services to the aviation community and flying public." The AMS applies to acquisitions by the FAA in place of the Federal Acquisition Regulation (FAR) and various other provisions of Federal acquisition law.

The AMS became effective on April 1, 1996 in response to a Congressional mandate to the FAA:

IN GENERAL.—In consultation with such non-governmental experts in acquisition management systems as the Administrator may employ, and notwithstanding provisions of Federal acquisition law, the Administrator shall develop and implement an acquisition management system for the Administration that addresses the unique needs of the agency and, at a minimum, provides for—

(A) more timely and cost-effective acquisitions of equipment, services, property, and materials; and

(B) the resolution of bid protests and contract disputes related thereto, using consensual alternative dispute resolution techniques to the maximum extent practicable.

To assist the FAA, Congress also exempted the AMS from several otherwise-applicable provisions of Federal acquisition law:

(A) Title III of the Federal Property and Administrative Services Act of 1949 (41 U.S.C. 252–266).

(B) The Office of Federal Procurement Policy Act (41 U.S.C. 401 et seq.).