Helicopter Sikorsky MH-60S Seahawk Serial 70-2785 Register 166300 used by US Navy USN. Aircraft history and location Aircraft History 166300 US Navy 2010-06USN Jun10 HSC-85 /NW-00 Oct12 HSC-21 /VR-69 HSC-21 2013-09Sep13 HSC-14 /RH-20 HSC-14 2015-10Oct15 HSC-3./SA-31 HSC-3 Send Updates Use APP to upload photo @ (optional) When Now? / / Send