A 787 Boeing Dreamliner belonging to Qatar Airways was grounded in Doha for several days after a problem with an electrical panel, an industry source said on Friday.
A Qatar Airways spokesman in London said the company "is aware of a very minor incident which has been resolved" and refused to comment further or provide details.
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Boeing also refused to comment.
The industry source said the plane had been out of service since Monday, after the panel apparently overheated.
Boeing's Dreamliner has suffered from a string of problems since coming into service in September 2011, including a three-month grounding at the start of this year and a fire on board an empty Ethiopian Airlines plane at London's Heathrow airport this month.