According to Simple Flying, a dispute between United Airlines and engine manufacturer Rolls-Royce has put 45 Airbus A350 aircraft at risk. The disagreement centers on engine durability concerns as well as a 175 million dollar financial dispute, creating uncertainty over the carrier's future widebody order.

At the same time, United Airlines is actively reshaping its long-haul fleet through a major order for Boeing 787 aircraft. The ongoing dispute with Rolls-Royce regarding engine durability and the 175 million dollar figure continues to impact the decision-making process surrounding the 45 Airbus A350 jetliners.