▁had ▁a ▁new , ▁fat igue - life - im pro ved , ▁center ▁wing ▁that ▁was ▁retro f itted ▁to ▁many ▁earlier ▁H - models . ▁For ▁struct ural ▁reasons , ▁some ▁models ▁are ▁required ▁to ▁land ▁with ▁reduced ▁amounts ▁of ▁fuel ▁when ▁carrying ▁heavy ▁cargo , ▁reducing ▁us able ▁range . ▁The ▁H ▁model ▁remains ▁in ▁w ides p read ▁use ▁with ▁the ▁United ▁States ▁Air ▁Force ▁( US AF ) ▁and ▁many ▁foreign ▁air ▁forces . ▁Initial ▁deliver ies ▁began ▁in ▁ 1 9 6 4 ▁( to ▁the ▁R N Z AF ), ▁remaining ▁in ▁production ▁until ▁ 1 9 9 6 . ▁An ▁improved ▁C - 1 3 0 H ▁was ▁introduced ▁in ▁ 1 9 7 4 , ▁with ▁Australia ▁purch asing ▁ 1 2 ▁of ▁type ▁in ▁ 1 9 7 8 ▁to ▁replace ▁the ▁original ▁ 1 2 ▁C - 1 3 0 A ▁models , ▁which ▁had ▁first ▁entered ▁Royal ▁Australian ▁Air ▁Force ▁( RA AF ) ▁service ▁in ▁ 1 9 5 8 . ▁ ▁The ▁U . S . ▁Coast ▁Guard ▁emp lo ys ▁the ▁H C - 1 3 0 H ▁for ▁long - range ▁search ▁and ▁rescue , ▁drug ▁inter diction , ▁illegal ▁migr ant ▁pat rol s , ▁hom eland ▁security , ▁and ▁log istics . ▁ ▁C - 1 3 0 H ▁models ▁produced ▁from ▁ 1 9 9 2 ▁to ▁ 1 9 9 6 ▁were ▁designated ▁as ▁C - 1 3 0 H 3 ▁by ▁the