; (C) the anticipated certified professional controller attrition for each of the next 3 years; and (D) the number of certified professional controller trainees; . (d) Effective date The amendments made by subsection (c) shall take effect and apply to any reports submitted pursuant to section 44506(e) of title 49, United States Code, for each Controller Workforce Plan submitted after September 30, 2024. 522. FAA Workforce review audit (a) In general Not later than 90 days after the date of enactment of this section, the Inspector General of the Department of Transportation shall initiate an audit of any FAA workforce plans related to aviation safety completed during the past 5 fiscal years. (b) Contents In conducting the audit under subsection (a), the Inspector General shall— (1) identify whether any safety-critical positions have not been reviewed within the timeframe specified in subsection (a); (2) review FAA workforce gaps in safety-critical and senior positions, including the average vacancy period of such positions during the latest fiscal year; (3) review whether existing FAA workforce development programs are producing intended results, such as increased recruitment and retention of agency personnel