Department of Defense Amended Budget Authorization Act, 1989

Department of Defense Amended Budget Authorization Act, 1989 - Title I: Procurement - Authorizes appropriations to the Army, the Navy and Marine Corps, and the Air Force for FY 1989 for the following: (1) aircraft; (2) missiles; (3) weapons and tracked combat vehicles; (4) ammunition; (5) shipbuilding and conversion; and (6) other procurement.

Authorizes appropriations to the defense agencies for FY 1989.

Authorizes appropriations for FY 1989 for the destruction of lethal chemical weapons.

Amends the Department of Defense Authorization Act, 1982 to add recognition of a recent Memorandum of Understanding and other follow-on support agreements to the authority provided to the Secretary of Defense in connection with the NATO Airborne Warning and Control Systems (AWACS) program.

Title II: Research, Development, Test, and Evaluation - Authorizes appropriations for FY 1989 for the armed forces and the defense agencies for research, development, testing, and evaluation.

Title III: Operation and Maintenance - Authorizes appropriations for FY 1989 for operation and maintenance for the following: (1) the armed forces and the armed forces reserves; (2) the defense agencies; (3) the National Guard; (4) the National Board for the Promotion of Rifle Practice; (5) defense claims; (6) the Court of Military Appeals; and (7) environmental restoration, defense.

Authorizes appropriations for FY 1989 for the working capital funds of the armed forces and the defense agencies.

Title IV: Personnel Authorizations - Part A: Active Forces - Authorizes end strengths for active-duty forces for FY 1989.

Part B: Reserve Forces - Authorizes end strengths for the reserve forces for FY 1989. Authorizes the Secretary of Defense to waive such end strengths by a specified percentage and requires such end strengths to be reduced in a specified manner.

Authorizes end strengths for reserves on active duty in support of the reserves for FY 1989. Increases the number of members in certain grades authorized to be on active duty in support of the reserves.

Authorizes average military training student loads for the armed forces, the reserves, and the National Guard for FY 1989. Requires the adjustment of such student loads consistent with the end strengths for active and reserve forces.

Title V: General Provisions - Repeals the following: (1) the current Federal requirement for a separate budget request for the procurement of reserve equipment; (2) the current Federal requirement directing the Congress to authorize end strengths for civilian personnel of the Department of Defense (DOD) as of the end of each fiscal year; (3) a provision of the Goldwater-Nichols Department of Defense Reorganization Act of 1986 which requires the gradual reduction in non-management headquarters activities and support activities; and (4) specified provisions of the National Defense Authorization Act for Fiscal Years 1988 and 1989 limiting certain funds to be authorized or appropriated during FY 1989, providing an indefinite limitation on funds for forward area air defense systems, and providing an indefinite limitation on funds for a nuclear warhead for the Army Tactical Missile System.

Increases the authorized maximum annual limitation for cross-servicing agreements with allied countries (amounts used for the mutual defense of the United States and NATO countries).

Exempts defense contracts estimated to cost $1,000,000 or less from the wage-rate threshold requirements of the Service Contract Act of 1965.