Lubricant drain conduit for gas turbine engine

A gearbox comprising a housing and an output shaft rotatable relative to the housing, the housing defining a cavity therein, a seal between the housing of the gearbox and the output shaft, and between the cavity and an environment outside the cavity, the cavity having an inlet fluidly connectable to a source of lubricant and an outlet fluidly connectable to a scavenge pump for drawing lubricant out of the cavity, a drain conduit having a drain inlet outside the cavity in proximity to the seal for receiving leaked lubricant, and a drain outlet fluidly connected to the outlet of the cavity, the drain outlet located in proximity to a scavenge inlet via which the lubricant exits the cavity to flow toward the scavenge pump, such that, in use, a lubricant flow within the drain conduit is entrained by the lubricant exiting the cavity via the scavenge inlet.