Boeing has already delivered 50 of the 787s to date. Around half of those have been in operation in Japan, but airlines in India, South America, Poland, Qatar and Ethiopia, as well as United Airlines in the United States, are also flying the plane.
Boeing's main competitor, EADS, said on Wednesday it did not expect the problems with the 787 to affect the certification of its own rival plane, the Airbus A350.
"We will do what is needed to avoid the same problems," EADS strategy chief Marwan Lahoud told France's Radio Classic.
Airbus has said it hopes to achieve the maiden flight of the carbon-composite A350 by the middle of this year.