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The AIM Act identifies six applications that are to receive “the full quantity of [HFC] allowances necessary, based on projected, current, and historical trends, ”under the allowance allocation program through the end of 2025. The six applications are a propellant in metered dose inhalers, defense sprays, structural composite preformed polyurethane foam for marine use and trailer use, the etching of semiconductor material or wafers and the cleaning of chemical vapor deposition chambers within the semiconductor manufacturing sector, mission-critical military end uses, and onboard aerospace fire suppression. EPA can renew this status for up to five years at a time based on statutory criteria outlined in the AIM Act. This proposed rule will review and consider whether to renew eligibility for each of the six applications, consistent with this statutory process under AIM subsection (e)(4)(B). Additionally, EPA intends to establish how it will review eligibility if petitioned for inclusion of additional applications and to consider revisions to existing regulatory requirements.