NEW YORK (Standard&Poor's) Jan. 29, 2009--Standard&Poor's Ratings Services today revised its outlook to negative from stable on Boeing Co. and its wholly owned finance unit, Boeing Capital Corp. At the same time, we affirmed our ratings, including the 'A+/A-1' corporate credit ratings, on both entities. Reported balance sheet debt is about $3.9 billion at Boeing and $3.6 billion at Boeing Capital. "The outlook revision reflects primarily a deteriorating global aviation market, with potential for substantially higher customer financing requirements, and a significant pension deficit," said Standard&Poor's credit analyst Roman Szuper. "The latter, combined with a larger-than-anticipated financial impact from the machinists strike in September to October 2008, cost overruns on the 747-8 aircraft development