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British Engineering giant continued claims Trent engine used in the widebody draws the Pratt & Whitney swept its U.S. rival in the A380 programme fan blade design.

The new adds to the problems of Rolls-Royce after more of ￡ billion was struck its value share in the wake of the incident Qantas A380 Thursday, when one of the four engines of a widebody seemed to blow up in case of success, airs.En counter - follows - Rolls-Royce already filed a lawsuit against Pratt and Whitney United States - could seriously damage the British company not only in the A380 programme but also the roll-out Boeing 787 series role.

Pratt & Whitney, in a trial before the High Court of London, submits the Trent 900 and Trent 1000 engines are based on her own wings fan blade. The complaint was also submitted to the Commission on international trade in Washington.

In may, Rolls-Royce filed a complaint against Pratt and Whitney, claiming his fan violates its own patents. Their patent spat back to close to a decade, but this is considered to be the first time, American society attempted to submit a claim by the British courts.

Competition is intense, because both Rolls-Royce and Pratt & Whitney engine providers only superjumbo.Rolls-Royce has refused to comment on the company British procès.La this week comes under pressure to explain whether the explosion of one of its engines on a flight from Qantas, last week was off or caused by a defect in wider design. ""Uncertainty is the problem for the investors at the moment," said one shareholder of Rolls-Royce.

Shares of rollers lost almost 10pc in two days, cut the value of manufacturer listed FTSE 100 Wednesday night engine 5.3 ￡ 12 to about ￡ structured when the market closed on Friday.Shareholders seeking clarity in advance of an update on the third quarter of the Rolls-Royce Friday.

Rolls-Royce has refused to comment on the incident, beyond to ask all the A380 for its Trent 900 engine operators carry out a series of audits.

"We will continue to work closely with our customers, as the investigation progresses .c ' is at a very early stage and it would be inappropriate conclusions at this time", notoriously taciturn roles, said last week.

Up to 20 A380, operated by Qantas, Singapore Airlines and Lufthansa use Trent 900 engine rolls, with four engines by avion.Les other 17 A380 into service are owned by Emirates and Air France and use engine built by GE-Pratt & Whitney of the United States.

Airbus has 196 another command on order and analysts fear that if Trent 900 is a design flaw, then some clients will switch to the GE-Pratt & Whitney engine instead of this.

Currently, total 234 A380 ordered and delivered, 122 have been ordered with the GE-Pratt & Whitney, engine 90 with roles option and 22 have yet to choose.

Alan Joyce, Chief Executive of Qantas, considers a design fault likely caused the eruption in flight: "It's probably very probably a hardware failure or a type design question."He said he hopes to have his fleet failed six command flying "within days.

Rolls Royce refused to respond to his remarks.

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