Model Types ModelDel'dFromTo Sikorsky S-61N31996 List of Aircraft Model C/N Built ID S-61N 61-702 w/o 2001 1972C-FHFS : Hayes Heli-Log Services ; w/o 15jan01 at Porteau Cove, Howe Sound ... S-61N 61-490 1971C-FHHD : Hayes Helicopter Services Ltd Apr97-Feb09 S-61N 61-468 w/o 2022 1969C-FHHM : Hayes Helicopter Services Ltd Mar01-Jul10 S-61L 61-033 1961C-FHHR : Northern Mountain Helicopters May97-Mar01 : Hayes forest services Mar01-Oct08