PurposeUSED FOR REMOVAL AND INSTALLATION OF THE VERTICAL FIN. THE SLING IS CAPABLE OF LAYING THE FIN DOWN ON EITHER SIDE OR PICKING IT UP FROM A LAID DOWN POSITION.Airplane777-200, 777-200ER, 777-200LR, 777-300, 777-300ER, 777-8, 777-9, 777FUsage CodeAIRPLANE RECOVERY