US transportation officials are reportedly set to announce a review into the power system of Boeing Co's new 787 Dreamliner.
The US Federal Aviation Administration will announce a review into the jet's power system at a press conference later of Friday, according to Bloomberg News.
The jet this week has experienced three mishaps in as many days, including an electrical fire that caused severe damage to a plane. The FAA declined to comment.
The move comes despite Qatar Airways' chief executive Akbar Al Baker playing down safety concerns on Wednesday.
He dismissed a series of recent incidents involving the plane as "teething problems" and said he had no plans to cancel orders.
Qatar Airways is the largest customer of the Dreamliner in the Middle East with an order for up to 60 of the aircraft - 30 firm orders plus an option on acquiring 30 more. It currently has a fleet of five 787 jets.
Japan's All Nippon Airways Co cancelled a Dreamliner flight scheduled to fly from Yamaguchi prefecture in western Japan to Tokyo on Wednesday due to brake problems.
That came just a day after a fuel leak forced a 787 operated by Japan Airlines to cancel its take-off at Boston's Logan International Airport. An electrical fire on another 787 forced cancellation of a JAL flight to Boston from Tokyo.
Al Baker has supported the US planemaker and said the incidents at Logan may have been isolated.