This action extends the comment period for the interim final rule, Aging Airplane Safety, issued on December 6, 2002. In that final rule, the FAA requires airplanes operated under Title 14, Code of Federal Regulations (14 CFR) part 121, U.S.-registered multiengine airplanes operated under 14 CFR part 129, and multiengine airplanes used in scheduled operations under 14 CFR part 135 to undergo inspections and records reviews by the Administrator or a designated representative. This is to occur after the airplane's 14th year in service and at named intervals thereafter. This extension results from a joint request made by the Air Transport Association (ATA) and the Regional Airline Association (RAA).