Engine pylon rear secondary structure

An engine pylon rear secondary structure for an aircraft comprising an engine pylon suspending an engine to a wing, the engine pylon rear secondary structure comprising:

• a front attachment interface, configured to be attached to a primary structure of the engine pylon;
• an aft attachment interface, configured to be attached to a primary structure of the wing;
• a composite beam connecting the front attachment interface (310) and the aft attachment interface and attached thereto;
• the composite beam comprising a first section and a second section integral with the first section;
• the second section comprising two branches;
• the first section being connected to the aft attachment interface and the second section being connected to the front attachment interface;
• frames comprising an outer face configured for supporting fairing panels and being attached to the first section of the composite beam;
• and
• fairing panels attached to the outer faces of the frames;
• wherein the composite beam is of a U-shaped cross-section, the frames comprising three brackets configured to be attached to the composite beam on three external faces of the U-shaped cross-section.