NORTH TEXAS (CBSDFW.COM/AP) — According to an internal memo, Fort-Worth based American Airlines is dropping some international flights from its plans for next summer because Boeing failed to deliver planes that were ordered.

Boeing has been unable to deliver its 787 jetliner, which it calls the Dreamliner, for about a year because of a series of manufacturing problems. The twin-aisle jet is popular with airlines for long flights because of its improved fuel efficiency over older planes of similar size.

READ MORE: 1 Dead, 1 Injured In Fort Worth Shooting On Sycamore School Rd

American had expected 13 more Dreamliners in its fleet by this winter. Without those planes, “we simply won’t be able to fly as much internationally as we had planned next summer, or as we did in summer 2019,” Chief Revenue Officer Vasu Raja said in the memo to American’s employees.

“Boeing has advised us that they will compensate American for their inability to deliver the aircraft,” he added.

In an emailed statement, Chicago-based Boeing did not address compensation but said it regrets the impact of delayed deliveries on its airline customers.

“Our team is continuing comprehensive inspections and rework, as needed, on undelivered airplanes, while holding transparent discussions” with the Federal Aviation Administration, Boeing said. The FAA regulates aircraft manufacturers.

Airline schedules have been upended by the pandemic, and that is particularly true of international flights because of changing rules around the world. The carriers, however, have been encouraged by the increase in traffic since the rollout of vaccines against COVID-19, and they were optimistic about next summer, believing that people who have been stuck at home are eager to travel again.

READ MORE: Blind Man Who Rescued 5 After Oklahoma City Bombing Dies

American hoped to operate 89% of its 2019 schedule in summer 2022 but is scaling that back to about 80%, said spokeswoman Andrea Koos.

According to the internal memo, American won’t fly to Edinburgh, Scotland; Shannon, Ireland; or Hong Kong next summer and won’t bring back some destinations it served in 2019, including Prague. It will also cut the number of flights it hoped to offer to destinations in Asia, including Shanghai, Beijing and Sydney and will delay starting new service including flights between Seattle and Bangalore, India.

American expects to resume a full schedule to Mexico, the Caribbean, Latin America, London, Dublin and Madrid, according to the memo.

This past summer, American used some two-aisle jets on flights within the U.S. and on short international flights. Next summer, however, all those so-called widebody planes will be used on long international routes “to minimize the damage these aircraft delivery delays have caused to our long-haul portfolio,” Raja wrote in the memo, which was first reported by The Wall Street Journal.

Boeing has struggled with production flaws on 787s including tiny gaps between fuselage panels and improperly manufactured titanium parts. The issues have prevented Boeing from delivering planes that have rolled off assembly lines in South Carolina and Washington states. As undelivered planes have stacked up, the aircraft maker has slowed production.

MORE NEWS: Mesquite To Hold Prayer Vigil For Murdered Teen 'Left For Dead On The Street'

(© Copyright 2021 CBS Broadcasting Inc. All Rights Reserved. The Associated Press contributed to this report.)

CBSDFW.com Staff