PurposeUSED FOR APU FISHPOLE HOISTING OPERATIONS. BALLAST USED FOR APU REMOVAL/INSTALLATION IN THE ABSENCE OF THE GENERATOR & ISN'T APPROVED FOR TRANSPORT OR FLIGHT WHILE INSTALLED ON THE APU.Airplane777-200, 777-200ER, 777-200LR, 777-300, 777-300ER, 777-8, 777-9, 777FUsage CodeMAINTENANCE 