A latch mechanism for use in a ram air turbine actuator, the latch mechanism comprising: a coupler housing extending from a first end to a second end opposite the first end, the coupler housing comprising: a base arm having an upper surface and a lower surface opposite the upper surface; a first wall extending away from the upper surface of the base arm, the first wall including a first slot ; and a second wall extending away from the upper surface of the base arm, the second wall including a second slot , wherein the upper surface, the first wall, and the second wall at least partially enclose a cavity therebetween; a lock release pivot arm comprising: a first end; a second end opposite the first end of the lock release pivot arm; an orifice located proximate the second end of the lock release pivot arm; and a pivot pin located within the first slot, the second slot, and the orifice, the pivot pin operably connecting the lock release pivot arm and the coupler housing; wherein the lock release pivot arm further comprises a notch located on a bottom surface of the lock release pivot arm, the bottom surface being in a facing spaced relationship with the upper surface of the coupler housing, characterised in that the base arm of the coupler housing further comprises: a first notch located in the upper surface of the base arm and configured to interlock with the notch of the lock release pivot arm; and a second notch located in the upper surface of the base arm and configured to interlock with the notch of the lock release pivot arm, and preferably wherein the first notch of the base arm is located at the first end of the coupler housing, and preferably wherein the second notch of the base arm is located interposed between the first end of the coupler housing and the second end of the coupler housing. a coupler housing extending from a first end to a second end opposite the first end, the coupler housing comprising: a base arm having an upper surface and a lower surface opposite the upper surface; a first wall extending away from the upper surface of the base arm, the first wall including a first slot ; and a second wall extending away from the upper surface of the base arm, the second wall including a second slot , wherein the upper surface, the first wall, and the second wall at least partially enclose a cavity therebetween; a lock release pivot arm comprising: a first end; a second end opposite the first end of the lock release pivot arm; an orifice located proximate the second end of the lock release pivot arm; and a first end; a second end opposite the first end of the lock release pivot arm; an orifice located proximate the second end of the lock release pivot arm; and a pivot pin located within the first slot, the second slot, and the orifice, the pivot pin operably connecting the lock release pivot arm and the coupler housing; wherein the lock release pivot arm further comprises a notch located on a bottom surface of the lock release pivot arm, the bottom surface being in a facing spaced relationship with the upper surface of the coupler housing, characterised in that the base arm of the coupler housing further comprises: a first notch located in the upper surface of the base arm and configured to interlock with the notch of the lock release pivot arm; and a second notch located in the upper surface of the base arm and configured to interlock with the notch of the lock release pivot arm, and preferably wherein the first notch of the base arm is located at the first end of the coupler housing, and preferably wherein the second notch of the base arm is located interposed between the first end of the coupler housing and the second end of the coupler housing. <EOS>