The Federal Aviation Administration has signed off on one of two key certifications for the Boeing-built KC-46 tanker, the company announced this week. The KC-46 is a second-derivative of Boeing's commercial 767 aircraft. The FAA's amended-type certification verified that the 767-2C, a modified 767, is safe and reliable. "This is a key building block for the KC-46 program in that it retires risk and builds confidence as we continue our test efforts and work to complete the next phase of...