Helicopter Sikorsky MH-60R Seahawk Serial Register 166577 used by US Navy USN. Aircraft history and location Aircraft History 166577 US Navy US Navy 2010 HSM-77 /NG-712 HSM-77 2014-03Mar14 HSM-71 /NG-712 HSM-71 Send Updates Use APP to upload photo @ (optional) When Now? / / Send