This action finalizes the residual risk and technology review (RTR) and the rule review the Environmental Protection Agency (EPA) conducted for Aerospace Manufacturing and Rework Facilities under the national emissions standards for hazardous air pollutants (NESHAP). In this action, we are finalizing several amendments to the NESHAP based on the review of these standards. These final amendments add limitations to reduce organic and inorganic emissions of hazardous air pollutants (HAP) from specialty coating application operations; remove exemptions for periods of startup, shutdown and malfunction (SSM) so that affected units will be subject to the emission standards at all times; and revise provisions to address recordkeeping and reporting requirements applicable to periods of SSM. These final amendments include a requirement to report performance testing through the EPA's Compliance and Emissions Data Reporting Interface (CEDRI). This action also makes clarifications to the applicability, definitions, and compliance demonstration provisions, and other technical corrections. The EPA estimates that implementation of this rule will reduce annual HAP emissions by 58 tons.