VIENNA (Reuters) - Austria plans to replace its retiring C-130 Hercules fleet with Embraer's C-390 military transport aircraft, Defence Minister Klaudia Tanner said on Wednesday.

Austria is aiming to buy about four aircraft and is negotiating with the Netherlands on a potential joint order, Tanner told a news conference. A contract for an order should be signed in the first half of next year, she added.

(Reporting by Francois Murphy; Editing by Andrew Heavens)