PARIS, July 2, 2008 (AFP) - The former German chief executive of planemaker Airbus, Gustav Humbert, in custody for questioning over alleged insider trading, will go before a judge Wednesday to face possible charges, a source close to the case said.

Humbert was detained for questioning Monday by France's financial crime unit over alleged insider trading at Airbus parent EADS.

Former EADS chief executive Noel Forgeard and the company's former general manager, Jean-Paul Gut, have already been charged in the probe although both have denied any wrongdoing.