In response to adverse comment, EPA is withdrawing the direct final rule published in the Federal Register on April 11, 2006 (71 FR 18219). This direct final rule sought to exempt importers of aircraft fire extinguishing vessels containing halon-1301 ("aircraft halon bottles") from the import petition process in order to facilitate the routine hydrostatic testing of these bottles for environmental and safety purposes. In the direct final rule, the Agency indicated that should we receive adverse comment by May 11, 2006, we would publish a timely withdrawal notice in the Federal Register. We received adverse comment on the direct final rule from one commenter and we will address this comment in a subsequent final action based on the parallel proposal also published on April 11, 2006 (71 FR 18259). As stated in the parallel proposal, we will not institute a second comment period on this action.