The BK Fliers BK-1 is a single seat homebuilt aircraft.

The Bk-1 was designed and built by Bruce King in 2004 after building a modified Hummel Bird.

It was patterned after the Hummel Bird, with a full VW engine and larger cockpit and surfaces.

[1][2] The BK-1 is an all-aluminum, monocoque/semi-monocoque, single-engine, low-wing airplane, with either conventional or tricycle landing gear.

The BK-1.3 is a modified version, 30% larger than the original, with full-span flaperons.