An aircraft is equipped with a spinnion coupling an inboard wing to a tilting nacelle. The spinnion is advantageously configured to extend across the nacelle from an inboard junction to an outboard junction, and terminates inside the inboard wing. This provides an efficient lightweight structure to support a nacelle and facilitate tilting of the nacelle. The spinnion, which can be configured to be at least partially disposed within the inboard wing, is advantageously concentric with the tilting axis in order to facilitate tilting of a nacelle. A cross-wing driveshaft can be included, disposed at least partly within the inboard wing, and can advantageously be configured to terminate inside the spinnion at a junction with a miter gearbox. The miter gearbox can be disposed at least partly within the spinnion but more preferably lies entirely within the spinnion, and functions to transfer power from an input shaft to the cross-wing driveshaft.