- 1 3 0 A ▁became ▁oper ational ▁with ▁T act ical ▁Air ▁Command ▁( TAC ), ▁the ▁C - 1 3 0 ' s ▁lack ▁of ▁range ▁became ▁apparent ▁and ▁additional ▁fuel ▁capacity ▁was ▁added ▁with ▁wing ▁p yl on - mount ed ▁t anks ▁out board ▁of ▁the ▁engines ; ▁this ▁added ▁ 6 , 0 0 0   lb ▁( 2 , 7 2 0   kg ) ▁of ▁fuel ▁capacity ▁for ▁a ▁total ▁capacity ▁of ▁ 4 0 , 0 0 0   lb ▁( 1 8 , 1 4 0   kg ). ▁ ▁Im pro ved ▁versions ▁ ▁The ▁C - 1 3 0 B ▁model ▁was ▁developed ▁to ▁complement ▁the ▁A - models ▁that ▁had ▁previously ▁been ▁delivered , ▁and ▁incorpor ated ▁new ▁features , ▁particularly ▁increased ▁fuel ▁capacity ▁in ▁the ▁form ▁of ▁auxili ary ▁t anks ▁built ▁into ▁the ▁center ▁wing ▁section ▁and ▁an ▁AC ▁elect rical ▁system . ▁Four - bl aded ▁Hamilton ▁Standard ▁prop ellers ▁replaced ▁the ▁Aer opro duct s ▁three - bla de ▁prop ellers ▁that ▁distinguished ▁the ▁earlier ▁A - models . ▁ ▁The ▁C - 1 3 0 B ▁had ▁a iler ons ▁operated ▁by ▁hyd ra ul ic ▁pressure ▁that ▁was ▁increased ▁from ▁ ▁to ▁, ▁as ▁well ▁as ▁u pr ated ▁engines ▁and ▁four - bla de ▁prop ellers ▁that ▁were ▁standard ▁until ▁the ▁J - model . ▁ ▁The ▁B ▁model ▁was ▁originally ▁intended ▁to ▁have ▁" b low n ▁controls ", ▁a ▁system ▁which ▁blow