; and (2) making recommendations to update and improve such regulations. (b) Final regulation Not later than 6 years after the date of enactment of this Act, the Administrator shall issue a final regulation revising section 121.317 of title 14, Code of Federal Regulations, and such other related regulations as the Administrator determines appropriate, to— (1) update such section and regulations to incorporate exemptions commonly issued by the Administrator; (2) reflect civil penalty inflation adjustments; and (3) incorporate such updates and improvements recommended by the Aviation Rulemaking Advisory Committee that the Administrator determines appropriate. 519. Seat dimensions Not later than 60 days after the date of enactment of this Act, the Administrator shall— (1) initiate a rulemaking activity based on the regulation described in section 577 of the FAA Reauthorization Act of 2018 ( 49 U.S.C. 42301 note); or (2) if the Administrator decides not to pursue the rulemaking described in paragraph (1), the Administrator shall brief appropriate committees of Congress on the justification of such decision. 520. Modernization of consumer complaint submissions Section 42302 of title 49, United States Code, is amended to read as follows: 42302. Consumer complaints (a) In general The Secretary of Transportation shall— (1) maintain an accessible website through the Office of Aviation Consumer Protection to accept the submission of complaints from airline passengers regarding air travel service problems; and (2) take appropriate actions to notify the public of such accessible website. (b) Notice to passengers on the internet An air carrier or foreign air carrier providing scheduled air transportation using any aircraft that as originally designed has a passenger capacity of 30 or more passenger seats shall include on the accessible website of the carrier— (1) the accessible website, e-mail address, or telephone number of the air carrier for the submission of complaints by passengers about air travel service problems