The second aircraft that Northrop Grumman Corporation has designated for the U.S. Air Force KC-45 Tanker program completed its final check flight May 15, illustrating the rapid production capability that will allow Northrop Grumman to quickly replace the aging KC-135 Tanker fleet. This aircraft, designated SDD-2, follows the first KC-45 Tanker airframe (SDD-1), which was completed in July 2007 and performed its maiden flight Sept. 25, 2007. Both SDD-1 and SDD-2 will be outfitted with in-flight refueling systems and additional military-specific equipment.

Northrop Grumman’s KC-45 is based on the Royal Australian Air Force’s KC-30B Multi-role Tanker, which is on schedule for delivery in early 2009. The United States is the fifth straight country to select the A330-based tanker for its Air Force.