Utilize the input text as a context reference, choose the right relationship between Airbus and aircraft from the options. Options: product/material produced, manufacturer, distributed by, industry, position held, original broadcaster, owned by, founded by, distribution format, headquarters location, stock exchange, currency, parent organization, chief executive officer, director/manager, owner of, operator, member of, employer, chairperson, platform, subsidiary, legal form, publisher, developer, brand, business division, location of formation, creator.

Airbus has told buyer nations of the A400M transporter aircraft that it cannot deliver all of its high-tech defences according to plan, casting a shadow over some of its military uses as Europe battles growing instability on its borders.

Answer: product_or_material_produced