Rolls-Royce, the aircraft engine maker, confirmed Friday that a “specific component in the turbine area” caused an oil fire that forced an Airbus A380 operated by Qantas Airways to make an emergency landing in Singapore last week.

Rolls-Royce’s finding came a day after Europe’s air safety regulator ordered a new round of inspections on all A380 jetliners using Rolls-Royce engines after it said an oil fire in the Trent 900 engine of the Qantas superjumbo might have been to blame.

An uncontained engine failure is a rare situation that results in components detaching and exiting the main engine housing, often with explosive force. The failure experienced by Qantas was the first on a large civil Rolls-Royce engine since 1994.

In a statement, Rolls-Royce, whose headquarters is in London, said its investigations had led to two main conclusions.