2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/45624In this paper the relevance of non-spectator decays of charm particles is analysed and some crucial tests for it are suggested.9 pages, plain TeX; 1 uuencoded PostScript figure in separate fileHigh Energy Physics - PhenomenologyThe Crucial Role of $ωπ^+$ Production in the $D_s^+$ Decaytext