Yes.
There is a certain absence of volume in the nose cone.
Its an aluminum aircraft.
-"A Boeing 747-400 type airplane with 6 million parts, 71 meters long, 64 meters wingspan and 270 kilometers of cable, weighs approximately 185,000 kilograms, of which approximately 75,000 kilograms is aluminum."
I cant verify about the guidance disk.
I'm sure you're right.