development of aviation safety standards: Provided further , That none of the funds in this Act shall be available for new applicants for the second career training program: Provided further , That none of the funds in this Act shall be available for the Federal Aviation Administration to finalize or implement any regulation that would promulgate new aviation user fees not specifically authorized by law after the date of the enactment of this Act: Provided further , That there may be credited to this appropriation, as offsetting collections, funds received from States, counties, municipalities, foreign authorities, other public authorities, and private sources for expenses incurred in the provision of agency services, including receipts for the maintenance and operation of air navigation facilities, and for issuance, renewal or modification of certificates, including airman, aircraft, and repair station certificates, or for tests related thereto, or for processing major repair or alteration forms: Provided further , That of the funds appropriated under this heading, not less than $162,000,000 shall be for the contract tower program, including the contract tower cost share program: Provided further , That none of the funds in this Act for aeronautical charting and cartography are available for activities conducted by, or coordinated through, the Working Capital Fund: Provided further , That none of the funds appropriated or otherwise made available by this Act or any other Act may be used to eliminate the Contract Weather Observers program at any airport. Facilities and equipment (airport and airway trust fund) For necessary expenses, not otherwise provided for, for acquisition, establishment, technical support services, improvement by contract or purchase, and hire of national airspace systems and experimental facilities and equipment, as authorized under part A of subtitle VII of title 49, United States Code, including initial acquisition of necessary sites by lease or grant