Singapore Airlines said on Thursday that three of its Airbus A380 superjumbos will be out of service for at least one week.

Singapore Airlines said on Thursday that three of its Airbus A380 superjumbos will be out of service for at least one week.

The airline pulled three of its A380 jumbos from its network Wednesday for precautionary engine changes after tests uncovered problems with the planes' Rolls-Royce engines.

Singapore Airlines regional vice president Subhas Menon told Australian Associated Press the engine changes were "precautionary ".

"Last week ... we did inspect all our aircraft and engines and as a result of the manufacturer analysing these findings further, we have been advised to carry out further checks on three engines as a precautionary measure," he said in Sydney.

Asked if there were concerns for the safety of the airline's 11 A380s prior to the engine changes being carried out, Menon said " No such concerns. These are precautionary checks."

The airline said on its website schedules had not been affected and other planes would be used to replace the three A380s.

The change follows Qantas' decision last week to ground all its six A380s, after an engine exploded on a Qantas A380 flying from Singapore to Sydney shortly after take-off, forcing the plane to make an emergency landing in Singapore on November 4.

VietNamNet/Xinhuanet