British Airways is cutting its winter frequencies to Miami because of ongoing issues with the Trent 1000 engines on its Boeing 787 Dreamliners.
Miami will be served by the airline an average of twice daily from London Heathrow between December and end-March 2020, down from three times daily in winter 2018-19, according to Cirium schedules data and confirmed by the airline.
BA says the reduction in capacity is the result of the ongoing Rolls-Royce Trent 1000 engine issues.
As a result of the aircraft changes, BA will offer 4,718 seats per week in each direction during winter 2019/20. This is equivalent to 41% fewer seats than the 8,001 seats per week during winter 2018/2019, Cirium schedules data shows. Smaller reductions of around 20% of capacity will also be seen in November.
BA notes that through its partner American Airlines it will still serve the route with 21 flights per week.
In winter 2018-19 the airline operated Boeing 747-400 and Airbus A380 aircraft on the route, but this year will only operate 747-400s.
Although the 787 did not serve the route in winter 2018-19, the reduction in capacity demonstrates how BA has been forced to rearrange its schedules to account for the Trent 1000 problems.
The Oneworld carrier will return to operating three flights daily from Heathrow to Miami for its summer schedule April-September with the addition of a daily A380 service.
BA had previously said that problems with its Trent 1000 engines would force adjustments to its long-haul schedules.
Durability issues with the engines have led to a US Federal Aviation Administration airworthiness directive which limits the operations of Rolls-Royce-powered Dreamliners until a permanent fix is implemented.