本篇文章(zhang)里的(de)運(yun)(yun)輸航(hang)空公(gong)(gong)(gong)司(si)是指(zhi)按照(zhao)《大型飛(fei)機公(gong)(gong)(gong)共航(hang)空運(yun)(yun)輸承運(yun)(yun)人(ren)運(yun)(yun)行合格審定規則》（CCAR-121部）運(yun)(yun)行的(de)航(hang)空公(gong)(gong)(gong)司(si)，不包(bao)含(han)按照(zhao)《小(xiao)(xiao)型航(hang)空器(qi)商業運(yun)(yun)輸運(yun)(yun)營人(ren)運(yun)(yun)行合格審定規則》（CCAR-135部）運(yun)(yun)行的(de)航(hang)空公(gong)(gong)(gong)司(si)及通用航(hang)空公(gong)(gong)(gong)司(si)；為了計算結果更接近實際情況(kuang)，機組數(shu)(shu)量、飛(fei)行小(xiao)(xiao)時(shi)數(shu)(shu)均采集自每月(yue)(yue)20日(ri)，而非月(yue)(yue)底數(shu)(shu)據。