; (2) the evaluation of a new aviation technology or system with respect to human use throughout its design and development may reduce human error when such technologies and systems are used in operational conditions; and (3) the technical standard of the Human Factors and Ergonomics Society titled Human Readiness Level Scale in the System Development Process (ANSI/HFES 400–2021) defines the 9 levels of a Human Readiness Level scale and their application in systems engineering and human systems integration processes. (b) Review Not later than 180 days after the date of enactment of this Act, the Administrator shall initiate a process to review the technical standard described in subsection (a)(3) and determine whether any materials from such standard should be incorporated or referenced in agency procedures and guidance material in order to enhance safety in relation to human factors. (c) Consultation In carrying out subsection (b), the Administrator may consult with subject matter experts from the Human Factors and Ergonomics Society affiliated with such technical standard or other relevant stakeholders. (d) Briefing Not later than 270 days after the date of enactment of this Act, the Administrator shall brief the appropriate committees of Congress on the progress of the review required under subsection (b). 335. Service difficulty reports (a) Congressional briefing Not later than 18 months after the date of enactment of this Act, and annually thereafter through 2027, the Administrator shall brief the appropriate committees of Congress on compliance with requirements relating to service difficulty reports during the preceding year. (b) Scope The Administrator shall include in the briefing required under subsection (a) information relating to— (1) operators required to comply with section 121.703 of title 14, Code of Federal Regulations; (2) approval or certificate holders required to comply with section 183.63 of title 14, Code of Federal Regulations