Device for attachment of an engine onto an aircraft nacelle stub

Device for attachment of an engine onto an aircraft nacelle stub, the device comprising a main attachment structure capable of transmitting forces between the engine and the nacelle stub during normal operation, and an emergency attachment structure that does not transmit any force during normal operation, the main attachment structure comprising a fitting including two half-fittings, attachment means that fix each of the two half-fittings to the nacelle stub separately, and at least two swivel ended connecting rods that can connect the fitting to the engine, in which the emergency attachment structure is laid out such that it would transmit the said forces through the other half-fitting if one of the half-fittings fails or if the means of fastening the half-fitting onto the nacelle stub fails, and the emergency attachment structure comprises a hinge pin with an axis approximately parallel to a longitudinal axis of the engine, the said hinge pin being fixed to one of the parts composed of the fitting and the nacelle stub and passing through a hole formed in the other part with a clearance, during normal operation.