LONDON—British aircraft-engine maker Rolls-Royce Holdings PLC has appointed Simon Kirby as chief operating officer as it labors to boost profitability. The move is the latest by Chief Executive Warren East to rebuild Rolls-Royce in the wake of a series of profit warnings. The company, which is no longer affiliated with the luxury car maker, is bracing for a big ramp-up in production of its commercial aircraft engines to satisfy...

Source: Wall Street Journal September 10, 2016 14:48 UTC