PurposeUSED TO CHECK HINGE PIN FREE PLAY AND BEARING WEAR IN HORIZONTAL STABILIZER PIVOT HINGE. ALSO, TO SUPPORT THE HORIZONTAL STABILIZER DURING INSPECTION, REMOVAL, INSTALLATION OF HINGE PIN AND/OR BEARINGAirplane777-200, 777-200ER, 777-200LR, 777-300, 777-300ER, 777-8, 777-9, 777FUsage CodeMAINTENANCE