ircraft ▁ ▁Z af ar ▁ 3 0 0 ▁ ▁Notes ▁▁ ▁US ▁Army ▁hel ic op ters ▁design ations : ▁▁ ▁A H : ▁Att ack ▁Hel ic opter ▁ ▁CH : ▁C argo ▁Hel ic opter ▁ ▁O H : ▁Observ ation ▁Hel ic opter ▁ ▁RA H : ▁Re con na issance ▁and ▁Att ack ▁Hel ic opter ▁ ▁U H : ▁Util ity ▁Hel ic opter ▁ ▁Project ▁ac ron ym s ▁ ▁AA H : ▁Advanced ▁Att ack ▁Hel ic opter ▁ ▁See ▁also ▁▁ ▁List ▁of ▁hel ic opter ▁air lines ▁ ▁List ▁of ▁t ilt - rot or ▁craft ▁ ▁List ▁of ▁United ▁States ▁military ▁hel ic op ters ▁ ▁List ▁of ▁utility ▁hel ic op ters ▁ ▁References ▁ ▁External ▁links ▁ ▁* ▁Category : List s ▁of ▁aircraft ▁by ▁design ▁configuration <0x0A> </s> ▁Oscar ▁Carl ▁H older er ▁( Nov ember ▁ 4 , ▁ 1 9 1 9 ▁– ▁May ▁ 5 , ▁ 2 0 1 5 ) ▁was ▁an ▁engineer ▁who ▁worked ▁for ▁Naz i ▁Germany ▁during ▁World ▁War ▁II ▁before ▁coming ▁to ▁the ▁United ▁States ▁and ▁working ▁in ▁the ▁Apol lo ▁space ▁program . ▁ ▁Early ▁life ▁Oscar ▁Carl ▁H older er ▁was ▁born ▁on ▁November ▁ 4 , ▁ 1 9 1 9 ▁in ▁Pr ü m , ▁Germany ▁to ▁parents ▁Richard ▁and ▁Hel ene ▁Gra we ▁H older er . ▁ ▁He ▁has ▁a ▁brother , ▁Er ich ▁Joseph , ▁and ▁sister ▁Dor is ▁( P ape ).