The pilot could drop its battery pack. Also, if the battery pack were to come loose or the device would loose power in another way, I guess the pilot would rap

The pilot could drop its battery pack. Also, if the battery pack were to come loose or the device would loose power in another way, I guess the pilot would rapidly take it off without much regard for where it ends up. And of course, it would require a specialized version, as the pilot was already wearing a flight helmet.