Helicopter Sikorsky HUS-1 / UH-34D Seahorse Serial 58-1810 Register 154900 used by Air America. Aircraft history and location Aircraft History 154900 Air America Sikorsky UH-34D ordered by USN under MDAP as 154900 to Air America to MASDC as 3H0231 Feb 1, 1971. Send Updates Use APP to upload photo @ (optional) When Now? / / Send