Ngokwesaziso soLawulo lweSizwe loLawulo lweMarike, Iifeni ze-axial flow ezinobungqina bokudubula ziye zahlelwa phantsi kwesiqinisekiso semveliso yesizwe esisisinyanzelo (CCC) inkqubo. Oku kuthetha ukuba abalandeli bokuqhuma kwe-axial flow kufuneka bathobele iimfuno zesatifikethi se-CCC zokufikelela kwimarike..
Izicelo zesiqinisekiso se-CCC ngokukodwa ukuqhushumba abalandeli bophando-bonisa.
Kukho umahluko obalulekileyo phakathi kokuqinisekiswa kweCCC- proc kunye nokuqinisekiswa rhoqo kwe-CCC, Njengamanye amashishini othengisa amashishini ukuba abalandeli bobungqina bobalandeli abanolwazi lokuqhutywa kwesiqinisekiso seCCC.