An aircraft cargo pallet lock assembly comprising: an actuator case; a restraint element which comprises at least one restraint plate (30a, 30b) and restraint detent, the restraint element being connected to the actuator case for pivotal movements between locked and released conditions relative to an edge of a cargo load pallet positioned on a cargo deck of an aircraft so as to positionally restrain the cargo load pallet against movement in both vertical and horizontal planes relative to the cargo deck; and an actuator assembly operably connected to the restraint element for moving the restraint element between the locked and released conditions thereof, wherein the restraint plate (30a, 30b) is positioned over an edge of the cargo load pallet when the restraint element is in the locked condition thereof so as to positionally restrain the cargo load pallet against movement in the vertical plane relative to the cargo deck, and wherein the restraint detent is positioned in an edge recess of the cargo load pallet when the restraint element is in the locked condition thereof so as to positionally restrain the cargo load pallet against movement in the horizontal plane relative to the cargo deck; the aircraft cargo pallet lock assembly being characterized by the fact that the actuator assembly comprises: a linear actuator having an actuator rod that is reciprocally moveable between extended and retracted conditions; and a linkage assembly which translates reciprocal movement of the actuator rod between the extended and retracted conditions into pivotal movement of the restraint element between the locked and released conditions, respectively. an actuator case; a restraint element which comprises at least one restraint plate (30a, 30b) and restraint detent, the restraint element being connected to the actuator case for pivotal movements between locked and released conditions relative to an edge of a cargo load pallet positioned on a cargo deck of an aircraft so as to positionally restrain the cargo load pallet against movement in both vertical and horizontal planes relative to the cargo deck; and an actuator assembly operably connected to the restraint element for moving the restraint element between the locked and released conditions thereof, wherein the restraint plate (30a, 30b) is positioned over an edge of the cargo load pallet when the restraint element is in the locked condition thereof so as to positionally restrain the cargo load pallet against movement in the vertical plane relative to the cargo deck, and wherein the restraint detent is positioned in an edge recess of the cargo load pallet when the restraint element is in the locked condition thereof so as to positionally restrain the cargo load pallet against movement in the horizontal plane relative to the cargo deck; the aircraft cargo pallet lock assembly being characterized by the fact that the actuator assembly comprises: a linear actuator having an actuator rod that is reciprocally moveable between extended and retracted conditions; and a linkage assembly which translates reciprocal movement of the actuator rod between the extended and retracted conditions into pivotal movement of the restraint element between the locked and released conditions, respectively.