YQC-6 Waco biplaneWaco airline models. The Waco Custom cabin series included all of the enlarged cabin sesquiplanes from 1935 and can be further divided into six basic models, OC, UC QC, GC, RE and VN, with additional subtypes differing primarily in engine installation (indicated by the first letter of the designation or by a low dash number, i. e. 1, 2) and by model year (dash numbers 6, 7, 8). Scale: 1 32. Wingspan 14 inches.