Bloomberg reports that IAG is now starting to get fed up with Airbus. Previously, Willie Walsh, CEO of IAG, indicated that they were concerned about being too reliant on Airbus. Now, there is another reason: delivery delays. IAG is a major A320 and A320neo customer. Unfortunately, Airbus has faced several production delays with their narrowbody aircraft. Consequently, IAG has received its Airbus narrowbody aircraft quite late.