Retractable landing gear for an aircraft, said landing gear comprising: - a trailing arm intended to be articulated to a structure of said aircraft and having at least one wheel, said at least one wheel being movable between a deployed position (POSD) and a retracted position (POSR), - a damper provided with a rod sliding in a body, said damper being intended to be articulated to said structure, - an actuator, and - a connecting rod articulated on the one hand to said damper by a second mechanical link with a single degree of freedom in rotation and on the other hand to the trailing arm, said connecting rod being out of alignment with said damper when a force less than a predetermined effort is applied to said damper, characterised in that said landing gear comprises: - a strut provided with a first tie-rod and a second tie-rod articulated between one another by a first mechanical link, said first tie-rod being articulated to said damper, said actuator being on the one hand intended to be connected to said structure and on the other hand connected to said second tie-rod in order to cause said second tie-rod to rotate relative to said structure, and - a locking device comprising an elastic return member and a stop device, said elastic return member being fixed by two extremities respectively to said strut and to an articulated assembly comprising said trailing arm, said connecting rod and a third mechanical link between said trailing arm and said connecting rod, said elastic return member exerting a traction force between said strut and said articulated assembly, said stop device being configured to stop any relative displacement between said first and second tie-rods (31, 32) about an axis of rotation of said first mechanical link caused by said traction force when said wheel is in said deployed position (POSD). - a trailing arm intended to be articulated to a structure of said aircraft and having at least one wheel, said at least one wheel being movable between a deployed position (POSD) and a retracted position (POSR), - a damper provided with a rod sliding in a body, said damper being intended to be articulated to said structure, - an actuator, and - a connecting rod articulated on the one hand to said damper by a second mechanical link with a single degree of freedom in rotation and on the other hand to the trailing arm, said connecting rod being out of alignment with said damper when a force less than a predetermined effort is applied to said damper, - a strut provided with a first tie-rod and a second tie-rod articulated between one another by a first mechanical link, said first tie-rod being articulated to said damper, said actuator being on the one hand intended to be connected to said structure and on the other hand connected to said second tie-rod in order to cause said second tie-rod to rotate relative to said structure, and - a locking device comprising an elastic return member and a stop device, said elastic return member being fixed by two extremities respectively to said strut and to an articulated assembly comprising said trailing arm, said connecting rod and a third mechanical link between said trailing arm and said connecting rod, said elastic return member exerting a traction force between said strut and said articulated assembly, said stop device being configured to stop any relative displacement between said first and second tie-rods (31, 32) about an axis of rotation of said first mechanical link caused by said traction force when said wheel is in said deployed position (POSD).