The ratings on Livonia, Mich.-based TRW Automotive Inc. reflect a somewhat below-average financial profile characterized by diminishing, but still moderately heavy debt, which more than offsets its solid business profile as one of the world's 10 largest manufacturers of original equipment auto parts. The company's product lines include active safety systems and components for braking, steering, and suspension; passive safety systems and components such as inflatable restraints (airbags), seat belts, and steering wheels; and other automotive components such as engine valves, engineered fasteners, and body control systems. TRW's average business profile reflects its leading market shares for most of its products, strong technical capabilities, moderate growth prospects, and good revenue diversity in the auto industry. TRW was a leader in