A Qantas flight has landed in Bangkok after pilots were forced to shut down one of the aircraft's engines.
The Australian airline says one of the Boeing 747's four engines experienced high vibration and temperature shortly after take-off on Friday.
The plane with 308 passengers left Bankgok bound for London, but touched down an hour later. Qantas says the landing was not an emergency.
It is the latest in a string of incidents involving Rolls-Royce engines.
In November last year, a blow-out in a Rolls-Royce Trent 900 engine forced a Qantas Airbus A380 to make an emergency landing in Singapore and prompted the temporary grounding of the Australian carrier's A380 fleet.
Rolls-Royce says it will support an investigation into a Cathay Pacific aircraft which made an emergency landing in Singapore with an engine problem on Monday.