"United Airlines Faces Series of Maintenance Issues with San Francisco-Bound Flights"

United Airlines experienced its fifth flight incident in a week as a Boeing 777-300 jet bound for San Francisco had to return to Sydney due to a maintenance issue, affecting 183 passengers and crew. This incident follows a series of other recent mishaps, including an engine fire, a tire loss, a runway skid, and a hydraulic system problem. The airline provided accommodation for affected passengers and rebooked them to their destination, while US aircraft manufacturer Boeing faces heightened scrutiny over safety and quality issues.