Helicopter Sikorsky HSS-2 Sea King Serial 61-215 Register 150620 used by Croman Corp ,US Navy USN. Aircraft history and location Aircraft History 150620 US Navy HC-1 /UP-721 HC-1 1991-08Aug91 SH-3G type HC-1 /UP-720 HC-1 Sikorsky SH-3G Sea King USN conv SH-3G to civ n/a Croman Corp Croman ex 150620 Send Updates Use APP to upload photo @ (optional) When Now? / / Send