Helicopter Sikorsky S-61A-1 Serial 61-281 Register U-281 used by Flyvevåbnet (Royal Danish Air Force). Built 1965. Aircraft history and location Aircraft History U-281 Flyvevåbnet 1968-02-10RDAF Esk.722, w/o 10Feb68. Send Updates Use APP to upload photo @ (optional) When Now? / / Send