The Environmental Protection Agency (EPA) is taking direct final action to exempt entities that import aircraft fire extinguishing spherical pressure vessels containing halon-1301 ("aircraft halon bottles") for hydrostatic testing from the import petitioning requirements for used controlled substances. The petitioning requirements compel importers to submit detailed information to the Administrator concerning the origins of the substance at least forty working days before a shipment is to leave a foreign port of export. This direct final rule reduces the administrative burden on entities that are importing aircraft halon bottles for the purpose of maintaining these bottles to commercial safety specifications and standards set forth in Federal Aviation Administration airworthiness directives. This direct final rule does not exempt entities that wish to import bulk quantities of halon-1301 in containers that are not being imported for purposes of hydrostatic testing.