Helicopter Sikorsky MH-60S Seahawk Serial Register 166290 used by US Navy USN. Aircraft history and location Aircraft History 166290 US Navy USN HSC-21 /VR-90 HSC-21 2007-05-29 A KNJK visit HSC-23./WC-44 stop at El Centro HSC-23 2023-11-03 B KMFR Medford, OR Send Updates Use APP to upload photo @ (optional) When Now? / / Send