Qantas A380s remain grounded

Qantas's fleet of Airbus A380s will remain grounded for a further three days as engineers try to identify the cause of last week's engine blowout.

The Australian carrier revealed yesterday that oil leaks had been discovered in three Rolls-Royce engines used by the aircraft, following a series of inspections.

Shares in Rolls-Royce have fallen about 10 per cent since the incident, but rose when the company announced it had "made progress" in its investigation. The engines will now be replaced as specialists try to determine whether the oil leaks played any role in the blowout that forced a flight from Singapore to Sydney to make an emergency landing last Thursday.