106 STAT. 4880 PUBLIC LAW 102-581—OCT. 31, 1992 no project for needed airport development affecting safety, security, or capacity will be deferred by such approval.". 49 USC app. (\y) FEDERAL SHARE.— Section 513(b)(5) of such Act is amended by inserting before the period at the end the following: "; except that the Imited States share of project costs allowable for any project under such paragraph at a commercial service airport which annually has.05 percent or less of the total enplanements in the United States shall be 85 percent". 49 USC app. (c) RETROACTIVE APPLICABILITY.— The amendment made by sub- 2212 note. section (a) may be applied to any terminal development which is underway in calendar year 1992 or later. SEC. 111. LETTERS OF INTENT. Section 513(d)(l) of the Airport and Airway Improvement Act of 1982 (49 U.S.C. App. 2212(d)(l)) is amended by adding at the end the following new subparagraph: "(G) OTHER CONSIDERATIONS. — A letter of intent issued under this paragraph shall not condition the obligation of any funds on the imposition of a passenger facility charge.". SEC. 112. AIRPORT DEVELOPMENT DEFINED. (a) AIRCRAFT DEICING EQUIPMENT. —Section 503(a)(2)(B) of the Airport and Airway Improvement Act of 1982 (49 U.S.C. App. 2202(a)(2)(B)) is amended— (1) by striking "or" at the end of clause (v); (2) by inserting after clause (vi) the following: (vii) aircraft deicing equipment and structures (other than aircraft deicing fluids and storage facilities for such equipment and fluids); or (viii) interactive training systems;". (b) CONTROL TOWER AND NAVIGATIONAL AIDS RELOCATION; MEETING MANDATES OF CERTAIN FEDERAL LAWS; AIRCRAFT DEICING FACILITIES. —Section 503(a)(2) of such Act is further amended— (1) by striking "and" at the end of subparagraph (C); (2) by striking the period at the end of subparagraph (D) and inserting a semicolon; and (3) by adding at the end the following new subparagraphs: "(E) the relocation, after December 31, 1991, of an air traffic control tower and any navigational aid (including radar) if such relocation is necessary to carry out a project approved by the Secretary under this title; "(F) and if funded Dy a grant under this title, any construction, reconstruction, repair, or improvement of an airport (or any purchase of capital equipment for an airport) which is necessary for compliance with the responsibilities of the operator or 0¥nier of the airport under the Americans with Disabilities Act of 1990, the Clean Air Act, and the Federal Water Pollution Control Act with respect to the airport, other than construction or purchase of capital equipment which would primarily benefit a revenue producing area of the airport used by a nonaeronautical business; and "(G) any acquisition of land for, or work necessary to construct, a pad suitable for deicing aircraft prior to takeoff at a commercial service airport, including construction or reconstruction of paved areas, drainage collection structures, treatment ana discharge systems, appropriate
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