Aviation websites reported that an Airbus A330 flown by Singapore Airlines (SIA) lost power on both engines en route from Singapore to Shanghai on May 23.
Power was restored after pilots staged a partial descent.
"We are in contact with the airline and Rolls-Royce to determine the cause of this incident," an Airbus spokesman said.
Engine maker Rolls-Royce and SIA were not immediately available for comment, reported Reuters.
Aviation website The Aviation Herald cited a report from SIA which said that flight SQ836 encountered bad weather about three and a half hours after departure, during which both engines "experienced a temporary loss of power". The pilots then "followed operational procedures to restore normal operation of the engines", it said.
Another aviation website, Flightradar24, said that the plane dropped 13,000 feet or 3,960 metres before power returned.
The flight then continued to Shanghai's Pudong International Airport for a safe landing about 100 minutes later, at 10.56pm local time.
There were reportedly 182 passengers and 12 crew on board the plane.
SIA is reviewing the incident with engine maker, Rolls-Royce and Airbus, reported The Straits Times.
Additional reporting by AsiaOne