; and (2) publish updates to the guidance or model curricula required under subsection (b) at least once every 2 years, as necessary, from the date of initial publication. (d) Report to Congress If the Administrator does not issue such final rule by the deadline specified in subsection (a), the Administrator shall, not later than 30 days after such deadline, submit to the appropriate committees of Congress a report containing— (1) an explanation as to why such final rule was not issued by such deadline; and (2) a schedule for issuing such final rule . (e) Study The Comptroller General of the United States shall conduct a study on technical workers in the aviation maintenance industry. (f) Contents In conducting the study under subsection (e), the Comptroller General shall— (1) analyze the current Standard Occupational Classification system with regard to the aviation profession, particularly technical workers in the aviation maintenance industry; (2) analyze how changes to the Federal employment classification of aviation maintenance industry workers might affect government data on unemployment rates and wages; (3) analyze how changes to the Federal employment classification of aviation maintenance industry workers might affect projections for future aviation maintenance industry workforce needs and project technical worker shortfalls; (4) analyze the impact of Federal regulation, including Federal Aviation Administration oversight of certification, testing, and education programs, on employment of technical workers in the aviation maintenance industry; (5) develop recommendations on how Federal Aviation Administration regulations and policies could be improved to modernize training programs at aviation maintenance technical schools and address aviation maintenance industry needs for technical workers; (6) develop recommendations for better coordinating actions by government, educational institutions, and businesses to support workforce growth in the aviation maintenance industry