In the meantime, Boeing continues to modify the battery system on the last of the original 50 aircraft delivered up to the grounding in January. As of May 21, the company had completed work on 45, of which 40 had flown. It has also delivered the first two new 787s with the revised battery systems installed while still at the Everett, Wash., production site.
United resumed 787 flights on May 20 with a service between Houston and Chicago. The airline, which has six 787s, expects to bring its complete fleet back into service within days and launch international flights with the aircraft on June 10 with a service from Denver to Tokyo. Other long-haul flights, from Los Angeles to Shanghai and Houston to London, will be added in the summer months.
ANA will begin to resume services with its 18-strong 787 fleet on June 1, and plans to introduce the type on additional international routes later this summer including Tokyo Narita to Beijing and Shanghai, and Tokyo Haneda to Taipei. The increase will bring the number of overseas destinations served by ANA's 787s to five. Japan Airlines, which operates seven 787s, is also expected to resume flights on June 1, while Ethiopian Airlines became the first to operate the 787 on a commercial service since the grounding when it flew between Addis Ababa and Nairobi, Kenya, on April 27. Polish flag carrier LOT is scheduled to return its aircraft to service on June 5 with a flight from Warsaw to Chicago, while Qatar Airways resumed 787 services with a flight from Doha to Dubai on May 2.