Helicopter Sikorsky HH-60H Rescue Hawk Serial 70-2289 Register 165256 used by US Navy USN. Aircraft history and location Aircraft History 165256 US Navy 1999-04 A KNZY HS-4 HH-60H HS-4 / NK-616 HS-4 USN 2010 HS-10 HS-10 2015-11 Nov15 as HS-11 /AB-617 HS-11 Send Updates Use APP to upload photo @ (optional) When Now? / / Send