Airbus is pressing ahead with its plans to raise commercial aircraft production by about a third by 2010 undeterred by growing uncertainties in the global economy and the heavy impact of surging fuel costs on airline finances.

In spite of pessimistic forecasts of falling orders, Airbus said on Thursday it had enjoyed its second most successful Farnborough air show, with firm orders booked for 247 jets plus commitments for a further nine valued in total at $40.5bn at list prices before discounts.