Qatar Airways has not received any indication of delays to the Airbus A350 and believes Boeing  has "got its act together" after delays to the competing 787 Dreamliner, said chief executive Akbar Al-Baker.

Al-Baker told Reuters in an interview that he was interested in a possible upgraded version of the Airbus A320 single-aisle jet that may be launched soon, and was still examining the new "C Series" airplane from Canada's Bombardier.

Qatar Airways is one of the world's fastest growing airlines, having doubled its fleet in the last five years as the emirate establishes itself as a transport hub in competition with Dubai and Abu Dhabi airlines and legacy carriers in Europe and Asia.

Al-Baker has strongly criticised Boeing over delays of two years in production of the Boeing 787 Dreamliner, blamed by industry analysts on extensive outsourcing.

"I think they have got their act together but the proof is in the pudding. They have to deliver the first airplane," he said, speaking on the sidelines of a conference on investment in Qatar.

Concerns have also arisen over the future of Airbus's A350 after its parent company EADS announced this month that it had used up some of the "buffer" or spare margin in the development schedules for the 11 billion euro project.

The aircraft is due to be delivered in 2013, but Al-Baker said he was not worried about a repeat of the 787 problems or similar delays in deliveries of the Airbus A380 superjumbo.

Qatar is the largest customer for Airbus's future mid-sized A350 with firm orders for 80 planes. It has also ordered 30 787s and 5 A380s, making it one of the industry's most powerful buyers alongside Emirates of Dubai.

Asked if he had received any indication of delays to the Airbus A350, Al-Baker said "no," and added that the 787 crisis at Boeing had pushed Airbus to find ways to avoid the same fate.

"I think that it was a fantastic learning curve. If there is a delay it will be just a few months, but nothing more."

Both planes involve a leap in technology, using more carbon-fibre materials to make the aircraft lighter and more economic, flying as far on two engines as a 747 can on four.

Boeing and Airbus are also considering upgrading their single-aisle short- and medium-haul families of jets with new engines to offer 10-15 percent fuel savings from about 2015.

Al-Baker confirmed that Qatar Airways, seen in the industry as a potential launch customer for the upgraded Airbus model, is interested in the potential new version. Airbus has said it will decide whether to go ahead with the plan this year.

"We are interested in the (upgraded) A320 because any aircraft that has better performance, better fuel burn, better range would be very interesting to us," Al-Baker said.-Reuters