The aircraft was similar to the trimotor as a metal-covered, strut-braced biplane, with conventional landing gear.

The aircraft design featured an unusual modification of the trimotor arrangement with two nose-mounted engines stacked above each other with cockpit windows between them.

The Bach company was reorganized and dissolved during the Great Depression without any examples built.

[1] Data from Patent 79061,[1] Aerofiles Ba to Bl[4]General characteristics Performance

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