Abstract: A tail cone ventilation system including a tail cone case defining a tail cone interior and a tail cone exterior, the tail cone having a forward portion and an aft portion separated axially along a tail cone axis; an air inlet fluidly coupled with the tail cone interior through ducting, the air inlet located externally from the tail cone interior; a conduit attached to the tail cone case at the tail cone exterior and to a pylon at an opposite end, the conduit comprising a cable chase having cable, the cable being in operative communication with at least one electronic component within the tail cone interior; a cooling supply fluidly coupled between the air inlet and a pylon exhaust, the cooling supply configured to cool the cable within the cable chase; and a fan fluidly coupled with the cooling supply.