Helicopter Sikorsky HUS-1 / UH-34D Seahorse Serial 58-1791 Register H-51 153697 used by Air America. Aircraft history and location Aircraft History 153697 Air America Sikorsky UH-34D ordered by USN under MDAP as 153697 to Air America lost Jul 7, 1967, Laos. For H-51 see also S-55C 55-1068 w/o 1991 2009 412ep 36512 H-51 Air America 1967-05-2020may67 Send Updates Use APP to upload photo @ (optional) When Now? / / Send