PUBLIC LAWS-CH. 787-OCT. 29, 1949 Secretary of the Navy is authorized to enter into contracts for the pur- poses of this appropriation in an amount not exceeding $20,000,000: contractor's fee. Provided, That the fixed fee to be paid the contractor as a result of any construction contract entered into under this appropriation shall not exceed 4 per centum of the estimated cost of the construction contract, exclusive of the fee, as determined by the Secretary of the Projects outside Navy: Provided further, That this appropriation and the appropri- ation under this head in the Second Deficiency Appropriation Act, 62 Stat. 1042. 1948, shall be available hereafter for projects outside the continental 62 stat. 459. United States as authorized by the aforesaid Act of June 16, 1948, without regard to the projects specified in, or the limitations of cost imposed thereon by, the Second Deficiency Appropriation Act, 1948. SALARIES For personal services at the seat of government for the Bureau of Yards and Docks, $2,265,000. BUREAU OF AERONAUTICS AVIATION Transfer of funds. Experiments. etc. Liquidation of con- tractual obligations. 59 Stat. 212; 60 Stat. 491. Contract authority. For replacement of navigational and radio equipment for aircraft in service, aerological, photographic, and miscellaneous equipment, including repairs thereto, $25,000,000, and, in addition, not to exceed $20,000,000 of the appropriations for the Department of the Navy made by this Act shall be transferred from such appropriations in this Act as the Secretary of Defense may determine and be merged with this appropriation for the purposes of this appropriation; for mainte- nance, repair, and operation of aircraft, aircraft factory, air stations, testing laboratories, fleet and all other aviation activities, technical books and periodicals for use in the Bureau of Aeronautics and the field, outfits for aviation messes, the purchase for aviation purposes only of special clothing, wearing apparel, and special equipment, $410,585,000; for continuing experiments, development, and research on all types of aircraft, $80,000,000; in all, $515,585,000: Provided, That the unexpended balances of the appropriations for "Aviation, Navy," in the Naval Appropriation Acts 1946 and 1947 shall remain available during the fiscal year 1950, in such amount as may be neces- sary for the liquidation of contractual obligations incurred during the fiscal years 1946 and 1947 for aircraft, aircraft equipment, and con- tinuing experimental and developmental procurement. CONSTRUCTION OF AIRCRAFT AND RELATED PROCUREMENT For new construction and procurement of aircraft and equipment, spare parts and accessories therefor, including expansion of public plants or private plants (not to exceed $500,000), and government- owned equipment and installation thereof in public or private plants, and for the employment of personnel in the Bureau of Aeronautics necessary for the purposes of this appropriation, to remain available until expended, $523,070,000, of which $418,000,000 is for liquidation of obligations incurred under authority heretofore granted to enter into contracts for the foregoing purposes; and in addition, the Secre- tary of the Navy is authorized to enter into contracts for the purposes of this appropriation in an amount not to exceed $576,546,000. SALARIES For personal services at the seat of government for the Bureau of Aeronautics, $3,466,000. 1012 [63 STAT.