; (2) an identification of the other Federal agencies and private organizations assisting the Administration with the research; and (3) an estimate of when the research will be completed. 762. Advanced Materials Center of Excellence (a) In general Chapter 445 of title 49, United States Code, is amended by adding at the end the following: 44518. Advanced Materials Center of Excellence (a) In general The Administrator of the Federal Aviation Administration shall continue operation of the Advanced Materials Center of Excellence (referred to in this section as the Center ) under its structure as in effect on March 1, 2016, which shall focus on applied research and training on the durability and maintainability of advanced materials in transport airframe structures. (b) Responsibilities The Center shall— (1) promote and facilitate collaboration among academia, the Transportation Division of the Federal Aviation Administration, and the commercial aircraft industry, including manufacturers, commercial air carriers, and suppliers; and (2) establish goals set to advance technology, improve engineering practices, and facilitate continuing education in relevant areas of study. . (b) Table of contents The table of contents for chapter 445 of title 49, United States Code, is amended by adding at the end the following: 44518. Advanced Materials Center of Excellence. . VIII Aviation Revenue Provisions 801. Expenditure authority from Airport and Airway Trust Fund (a) In general Section 9502(d)(1) of the Internal Revenue Code of 1986 is amended— (1) in the matter preceding subparagraph (A) by striking October 1, 2018 and inserting October 1, 2023 ; and (2) in subparagraph (A) by striking the semicolon at the end and inserting or the FAA Reauthorization Act of 2018