It is an entirely wood and fabric aircraft with a wing built around a single spar.

It had a high wing of 5 dihedral, built around a single spar.

Forward of the single spar the wing was covered with a stressed metal skin, forming a torsion box.

They were built around a single spar, with a plywood covered D-box ahead of it and fabric behind.

The rectangular plan wing has a single spar and 2.8 of dihedral.

Each was built around a single spar and skinned with aluminium.

It has a single spar stressed to +8 to -6G loading.

Outboard of the engines the wings had a single spar and were without dihedral.

A ship's main truck and a single spar cut the fog's surface like a shark's fin, moving north.

The wings had a single wooden spar and were covered in plywood.