Methods integrated tailcone muffler is provided for minimizing noise generated while discharging pressurized air from one or more aircraft gas turbine engines. An attachment material is thermally sprayed over cords of the electrical leads, which are in contact with the heating layer over a contact area. The MCU includes a liquid-to-liquid heat exchanger, and defines portions of facility and system coolant loops. Currently the aperture has to be enlarged by manual handwork since there is no centre-point to which a pilot drill may be enlarged.