A nacelle is provided that includes an outer structure and an inner structure. The inner structure includes a support structure, a first core cowl and a second core cowl. The support structure includes a plurality of first hinges, a plurality of second hinges, a plurality of longitudinal rails and a plurality of crossover rails spaced longitudinally along and connected to the longitudinal rails. Each of the first hinges is connected to a respective one of the crossover rails at a first distal end of the respective crossover rail. Each of the second hinges is connected to a respective one of the crossover rails at a second distal end of the respective crossover rail. The first core cowl is pivotally mounted to the support structure by the first hinges. The second core cowl is pivotally mounted to the support structure by the second hinges.