Helicopter Sikorsky HUS-1 / UH-34D Seahorse Serial 58-1780 Register 153558 used by Air America. Aircraft history and location Aircraft History 153558 Air America Sikorsky UH-34D ordered by USN under MDAP as 153558 to Air America lost Mar 9, 1970, Laos. Send Updates Use APP to upload photo @ (optional) When Now? / / Send