4 ▁is ▁intended ▁to ▁address ▁the ▁applic ant . ▁▁ 8 1 1 0 . 4 2 C ▁addressed ▁both ▁the ▁applic ant ▁and ▁the ▁rev iewer . ▁ ▁Per ▁the ▁order , ▁application ▁for ▁a ▁P MA ▁can ▁be ▁made ▁per ▁the ▁following ▁ways : ▁ ▁Ident ical ity ▁in ▁which ▁the ▁applic ant ▁attempts ▁to ▁conv ince ▁the ▁F AA ▁that ▁the ▁P MA ▁part ▁is ▁identical ▁to ▁the ▁O A H ▁( Original ▁Appro val ▁H older ) ▁part . ▁ ▁Ident ical ity ▁by ▁Lic ensure ▁is ▁accomplished ▁by ▁providing ▁evidence ▁to ▁the ▁F AA ▁that ▁the ▁applic ant ▁has ▁lic ensed ▁the ▁part ▁data ▁from ▁the ▁O A H . ▁ ▁This ▁evidence ▁is ▁usually ▁in ▁the ▁form ▁of ▁an ▁Ass ist ▁Let ter ▁provided ▁to ▁the ▁applic ant ▁by ▁the ▁O A H . ▁ ▁P MA ▁may ▁also ▁be ▁granted ▁based ▁upon ▁prior ▁appro val ▁of ▁an ▁ST C ▁. ▁ ▁As ▁an ▁example : ▁ ▁If ▁an ▁ST C ▁were ▁granted ▁to ▁alter ▁an ▁existing ▁aircraft ▁design ▁then ▁that ▁appro val ▁would ▁also ▁apply ▁to ▁the ▁parts ▁needed ▁to ▁make ▁that ▁modification . ▁ ▁A ▁P MA ▁would ▁be ▁required , ▁however , ▁to ▁manufact ure ▁the ▁parts . ▁ ▁The ▁last ▁method ▁to ▁obtain ▁a ▁P MA ▁is ▁Test ▁& ▁Comput ation . ▁ ▁This ▁approach ▁consist ▁of ▁one ▁or ▁a ▁combination ▁of ▁both ▁of ▁the ▁following ▁methods : ▁ ▁General ▁Analysis ▁and ▁Compar ative ▁Analysis . ▁ ▁General ▁analysis ▁comp ares ▁the ▁proposed