A lock linkage system for a landing gear system, the lock linkage system comprising: a lockable assembly comprising: an upper brace defining a longitudinal axis; a lower brace coupled to the upper brace ; and a linkage coupled to the upper brace and the lower brace , the linkage being configured to allow movement of the upper brace and the lower brace relative to one another between unlocked and locked positions; a downlock actuator comprising: an electric motor coupled to the upper brace ; a gearbox coupled to the electric motor ; and a connecting output shaft having a first end and a second end, the first end coupled to a rotary output shaft of the gearbox , wherein the connecting output shaft is configured to rotate between a shaft locked position and a shaft unlocked position, wherein the gearbox is back-drivable in response to the connecting output shaft being in the shaft unlocked position, wherein back-drivable means that a load applied to said connecting output shaft by a link rod rotates the connecting output shaft , gears within the gearbox , and/or electric motor , wherein the downlock actuator is configured to toggle the linkage, the upper brace , and a lower brace between the unlocked and locked positions, and wherein the gearbox is fixedly coupled to the electric motor , the rotary output shaft is fixedly coupled to the gearbox, and the connecting output shaft is fixedly coupled to the rotary output shaft. a lockable assembly comprising: an upper brace defining a longitudinal axis; a lower brace coupled to the upper brace ; and a linkage coupled to the upper brace and the lower brace , the linkage being configured to allow movement of the upper brace and the lower brace relative to one another between unlocked and locked positions; an upper brace defining a longitudinal axis; a lower brace coupled to the upper brace ; and a linkage coupled to the upper brace and the lower brace , the linkage being configured to allow movement of the upper brace and the lower brace relative to one another between unlocked and locked positions; a downlock actuator comprising: an electric motor coupled to the upper brace ; a gearbox coupled to the electric motor ; and a connecting output shaft having a first end and a second end, the first end coupled to a rotary output shaft of the gearbox , wherein the connecting output shaft is configured to rotate between a shaft locked position and a shaft unlocked position, wherein the gearbox is back-drivable in response to the connecting output shaft being in the shaft unlocked position, wherein back-drivable means that a load applied to said connecting output shaft by a link rod rotates the connecting output shaft , gears within the gearbox , and/or electric motor , an electric motor coupled to the upper brace ; a gearbox coupled to the electric motor ; and a connecting output shaft having a first end and a second end, the first end coupled to a rotary output shaft of the gearbox , wherein the connecting output shaft is configured to rotate between a shaft locked position and a shaft unlocked position, wherein the gearbox is back-drivable in response to the connecting output shaft being in the shaft unlocked position, wherein back-drivable means that a load applied to said connecting output shaft by a link rod rotates the connecting output shaft , gears within the gearbox , and/or electric motor , <EOS>