An Airbus A350-941 from Singapore Airlines is preparing to take off on the runway at Barcelona-El Prat Airport in Barcelona, Spain, on May 1, 2024. Nurphoto | Nurphoto | Getty Images SINGAPORE — Shares of Singapore Airlines dropped after the city-state’s flag carrier reported a fall of almost 50% in net profit for its first half April to September period, citing lower yields and growing competition. As markets opened on Monday,