▁P MA ▁Fab ric ation ▁In spe ction ▁System ▁( F IS ), ▁as ▁was ▁the ▁case ▁in ▁prior ▁reg ulations , ▁the ▁P MA ▁reg ulations ▁now ▁include ▁a ▁cross ▁reference ▁to ▁the ▁ 1 4 ▁C . F . R . ▁§ ▁ 2 1 . 1 3 7 , ▁which ▁is ▁the ▁reg ulation ▁defining ▁the ▁elements ▁of ▁a ▁quality ▁system ▁for ▁all ▁production ▁appro val ▁hold ers . ▁ ▁In ▁practice , ▁all ▁production ▁appro val ▁hold ers ▁were ▁held ▁to ▁the ▁same ▁production ▁quality ▁standards ▁before ▁the ▁rule ▁change ▁- ▁this ▁will ▁now ▁be ▁more ▁obvious ▁in ▁the ▁F AA ' s ▁reg ulations . ▁ ▁Ac com pl ishing ▁this ▁harm on ization ▁of ▁standards ▁was ▁an ▁important ▁goal ▁of ▁the ▁Mod ification ▁and ▁Rep lacement ▁Part s ▁Association ▁( MA R PA ). ▁ ▁The ▁new ▁rule ▁became ▁effective ▁April ▁ 1 6 , ▁ 2 0 1 1 . ▁ ▁The ▁ ▁F AA ' s ▁FA Q ▁on ▁Part ▁ 2 1 ▁stated ▁that ▁P MA ▁quality ▁systems ▁would ▁be ▁evaluated ▁for ▁comp liance ▁by ▁the ▁F AA ▁during ▁certificate ▁management ▁activity ▁after ▁the ▁comp liance ▁date ▁of ▁the ▁rule . ▁ ▁Today , ▁all ▁F AA ▁production ▁appro val s ▁- ▁whether ▁for ▁complete ▁aircraft ▁or ▁for ▁piece ▁parts ▁- ▁rely ▁on ▁a ▁common ▁set ▁of ▁quality ▁ass urance ▁system ▁elements . ▁ ▁E . g . ▁ 1 4 ▁C . F . R . ▁§ § ▁ 2 1 . 1