AviationTire Airframe And Systems, Electrics, Powerplant, Em. Equipment Q 4 / 5

Aircraft structures consists mainly of:

Light alloy steel sheets with copper rivets and titanium or steel materials at points requiring high strength.
Magnesium alloy sheets with aluminium rivets and titanium or steel at points requiring high strength.
Aluminium alloy sheets and rivets with titanium or steel materials at points requiring high strength.
Aluminium sheets and rivets with titanium or steel materials at points requiring high strength.