This action amends the Special Federal Aviation Regulation (SFAR) that prohibits certain flights in specified areas of the Sanaa (OYSC) Flight Information Region (FIR) by all: United States (U.S.) air carriers, U.S. commercial operators, persons exercising the privileges of an airman certificate issued by the FAA, except when such persons are operating U.S.-registered aircraft for a foreign air carrier, and operators of U.S.-registered civil aircraft, except where the operator of such aircraft is a foreign air carrier. There has been a reduction in the level of risk to U.S. civil aviation operations in limited portions of the specified areas of the Sanaa (OYSC) Flight Information region (FIR) where the FAA had prohibited flight operations under the SFAR. As a result, the FAA is reducing the amount of airspace in the Sanaa (OYSC) FIR in which U.S. civil aviation operations are prohibited. However, there continues to be an unacceptable level of risk to U.S. civil aviation operations in the remainder of the specified areas of the Sanaa (OYSC) FIR, as described in this rule, resulting from terrorist and militant activity. Consequently, the FAA is also amending this SFAR to extend its expiration date. The FAA is also republishing, with minor revisions, the approval process and exemption information for this SFAR.