The wing of the XB-8 and XO-27 was built entirely from wood, although the fuselage was constructed of steel tubes covered with fabric with the exception of the nose which had a corrugated metal.
Sayap dari XB-8 dan XO-27 dibangun seluruhnya dari kayu, meskipun badan pesawat dibangun dari tabung baja ditutupi dengan kain dengan pengecualian dari hidung yang memiliki logam bergelombang.