...- Despite management's ongoing positive actions, U.K.-based engine manufacturer Rolls-Royce PLC reported weaker-than-expected core operating cash flows at its half-year results as at June 30, 2019. - At the same time, Rolls-Royce reported an additional ú100 million charge for the Trent 1000 platform (spread over three years) and a further ú59 million impairment on the Trent 900, and it continues to recognize and accelerate restructuring cash costs as it works to lower its headcount and cost base. - We now forecast that Rolls-Royce's profitability and credit metrics will recover more slowly versus our previous expectations, and are therefore lowering our long-term issuer credit and issue ratings on Rolls-Royce to '###' from '###+'. - The negative outlook indicates that Rolls-Royce faces elevated event risk versus peers in the potential event of a no-deal Brexit, specifically with regard to the civil aerospace engines that Rolls-Royce exports from the U.K. to its major customer Airbus in...