Two others were employed by Aerospatiale, the maker of the Concorde. The fifth is with the French civilian aviation authority.
The prosecutor announced the order in a statement Wednesday.
The Air France Concorde crashed after takeoff from Paris' Charles de Gaulle airport in July 2000. The crash killed all 109 people on board and four on the ground.
French investigators blamed a titanium strip left on the runway by a Continental Airlines DC-10.