 6.40, Money News at 10 and 40 past the hour, brought to you by PenFed, great rates for everyone. Boeing says it's making a move to improve the quality and safety of its planes as it comes under increasing scrutiny by regulators, Congress, and airlines. Boeing plans to buy Spirit AeroSystems in a $4.7 billion all-stock transaction. Spirit, which used to be owned by Boeing, makes key parts for the company's aircraft.