The Boeing Co. and its partner Safran S.A. have regulatory approval to launch their previously announced venture, which will design, build, and service auxiliary power units (APUs) for commercial aircraft. Each company will have a 50% share of the new company, still unnamed, which will be based in the U.S. The venture represents a new technology area for Boeing, though Safran currently manufactures APU systems, and Boeing and Safran already are partners in MATIS, a producer of wiring products for several airframe and engine companies. APUs are onboard engines used to start the main engines and power aircraft systems while on the ground, or during flight if necessary. They provide energy for functions other than propulsion, to power lighting, IT, navigation, ventilation, and various other electrical power requirements aboard an aircraft. While the APU market is dominated by Honeywell Inc. and United Technologies, Safran currently manufactures APU systems.