Reheat assembly for a gas turbine engine

A reheat assembly for a gas turbine engine, the reheat assembly comprising:

• a jetpipe casing comprising:
• a reheat core section configured to convey a core flow of air from a reheat core inlet to a reheat core outlet, and
• a reheat bypass section configured to convey a bypass flow of air from a reheat bypass inlet to a reheat bypass outlet radially outward of the core section, the reheat core section and the reheat bypass section being radially separated at the reheat core inlet and the reheat bypass inlet by a support duct;
• and
• a flameholder comprising:
• a flange portion defining an inlet aperture to an interior of the flameholder, and
• a boss extending away from the flange portion into the interior of the flameholder;
• wherein the flameholder is mounted to the support duct by a fastener extending through the support duct into a hole defined by the boss;
• and
• wherein the flameholder is configured to receive a flow of air from the reheat bypass section via the inlet aperture to cool the boss.