▁ ▁C - 1 3 1 A ▁Transport ▁for ▁United ▁States ▁Air ▁Force ▁based ▁on ▁Con v air ▁ 2 4 0 , ▁capable ▁of ▁carrying ▁ 3 9 ▁passengers ▁on ▁rear ward ▁facing ▁seats ▁or ▁ 2 0 ▁stretch ers ▁and ▁ 7 ▁seats . ▁ 2 6 ▁built . ▁H C - 1 3 1 A ▁Sur plus ▁C - 1 3 1 As ▁transferred ▁to ▁the ▁United ▁States ▁Coast ▁Guard , ▁ 2 2 ▁transferred . ▁MC - 1 3 1 A ▁Tem por ary ▁design ation ▁used ▁before ▁ 1 9 6 2 ▁when ▁a ▁C - 1 3 1 A ▁was ▁used ▁for ▁med iv ac ▁duties ▁with ▁ 2 7 ▁stretch ers . ▁V C - 1 3 1 A ▁Tem por ary ▁design ation ▁used ▁before ▁ 1 9 6 2 ▁when ▁a ▁C - 1 3 1 A ▁was ▁used ▁as ▁a ▁staff ▁transport . ▁C - 1 3 1 B ▁A ▁hy brid ▁Model ▁ 2 4 0 / 3 4 0 ▁with ▁seats ▁for ▁ 4 8 ▁passengers , ▁ 3 6 ▁built . ▁J C - 1 3 1 B ▁C - 1 3 1 B ▁converted ▁for ▁miss ile ▁tracking , ▁six ▁convers ions . ▁NC - 1 3 1 B ▁One ▁C - 1 3 1 B ▁used ▁for ▁permanent ▁testing . ▁V C - 1 3 1 B ▁C - 1 3 1 B ▁when ▁used ▁as ▁a ▁staff ▁transport . ▁Y C - 1 3 1 C ▁Two