Qatar Airways placed order for two Bombardier Global 5000 jets for its executive jet unit and a new medivac plane in a deal worth about $90 million, but failed to clinch a deal on the C-series passenger jets.

Qatar Airways chief executive Akbar Al Baker said it would have been happy to announce an order for Bombardier's C-series passenger jets at the Farnborough Airshow but unspecified issues have gotten in the way of talks.

Qatar's national carrier chief said it was still considering the C-series and saw a need for planes of that type. The C-series is due to enter service from 2013 serving the market for single-aisle planes carrying 100-149 passengers.

Al Baker, however declined to elaborate on the issues.-Reuters