PurposeUSED TO LOCK THE HORIZONTAL STABILIZER DURING REMOVAL OR INSTALLATION OF THE TRIM ACTUATOR. THE TEST EQUIPMENT IS USED TO APPLY A LOAD TO THE TRIM ACTUATOR BALLNUT DURING FREEPLAY TESTAirplane777-200, 777-200ER, 777-200LR, 777-300, 777-300ER, 777-8, 777-9, 777FUsage CodeMAINTENANCE 