Helicopter Sikorsky HUS-1 / UH-34D Seahorse Serial 58-1818 Register H-74 156596 used by Air America. Aircraft history and location Aircraft History 156596 Air America Sikorsky UH-34D ordered by USN under MDAP as 156596 to Air America, unk For H-74 see also uh-12e 2529 H-74 Air America 1969-09sep69 Send Updates Use APP to upload photo @ (optional) When Now? / / Send