An emergency park brake system of an aircraft, the emergency park brake system comprising: a user input interface configured to receive actuation input from a user, wherein the activation input comprises a displacement of the use input interface; a first displacement sensor coupled to the user input interface, the first displacement sensor configured to detect the displacement of the user input interface and generate a first status of the user input interface; a second displacement sensor coupled to the user input interface, the second displacement sensor configured to detect the displacement of the user input interface and generate a second status of the user input interface; and an emergency park brake controller having a processor and configured to perform operations comprising: receiving, by the processor, the first status of the user input interface and the second status of the user input interface; comparing, by the processor, the first status of the user input interface with the second status of the user input interface to yield comparison data; and determining, by the processor and based on the comparison data, an emergency park brake condition, wherein determining the emergency park brake condition comprises determining whether the comparison data comprises a threshold difference between the first status of the user input interface and the second status of the user input interface; in response to determining that the comparison data is less than the threshold difference and thus that the emergency park brake condition indicates an operative condition, transmitting, by the processor, a braking command to a braking assembly; and in response to determining that the comparison data is greater than the threshold difference and thus that the emergency park brake condition indicates a failure condition, not transmitting, by the processor, a braking command to the braking assembly. a user input interface configured to receive actuation input from a user, wherein the activation input comprises a displacement of the use input interface; a first displacement sensor coupled to the user input interface, the first displacement sensor configured to detect the displacement of the user input interface and generate a first status of the user input interface; a second displacement sensor coupled to the user input interface, the second displacement sensor configured to detect the displacement of the user input interface and generate a second status of the user input interface; and an emergency park brake controller having a processor and configured to perform operations comprising: receiving, by the processor, the first status of the user input interface and the second status of the user input interface; comparing, by the processor, the first status of the user input interface with the second status of the user input interface to yield comparison data; and determining, by the processor and based on the comparison data, an emergency park brake condition, wherein determining the emergency park brake condition comprises determining whether the comparison data comprises a threshold difference between the first status of the user input interface and the second status of the user input interface; in response to determining that the comparison data is less than the threshold difference and thus that the emergency park brake condition indicates an operative condition, transmitting, by the processor, a braking command to a braking assembly; and in response to determining that the comparison data is greater than the threshold difference and thus that the emergency park brake condition indicates a failure condition, not transmitting, by the processor, a braking command to the braking assembly. receiving, by the processor, the first status of the user input interface and the second status of the user input interface; comparing, by the processor, the first status of the user input interface with the second status of the user input interface to yield comparison data; and determining, by the processor and based on the comparison data, an emergency park brake condition, wherein determining the emergency park brake condition comprises determining whether the comparison data comprises a threshold difference between the first status of the user input interface and the second status of the user input interface; in response to determining that the comparison data is less than the threshold difference and thus that the emergency park brake condition indicates an operative condition, transmitting, by the processor, a braking command to a braking assembly; and in response to determining that the comparison data is greater than the threshold difference and thus that the emergency park brake condition indicates a failure condition, not transmitting, by the processor, a braking command to the braking assembly.