United Airlines ( UAL ) has reported a loss of $124 million for the first quarter, attributing the downturn to the grounding of its Boeing 737 Max 9 aircraft following an incident involving an Alaska Airlines Max jetliner in January. The three-week grounding significantly impacted United's operations and financial performance, leading to extensive flight cancellations and operational disruptions. This, coupled with delays in Boeing's ( BA ) manufacturing and delivery schedules, has prompted United to adjust its fleet expansion plans. Losses and Fleet Adjustments Follow 737 Max Grounding Financial results released by the airline highlighted continued robust demand for air travel, particularly within the United States and across the Atlantic. Despite the challenges posed by the Max 9 grounding, United remains optimistic about its performance in the second quarter. The grounding of the Max 9 fleet incurred significant costs for United, totaling approximately $200 million. This une