Helicopter Piasecki 16H-1 Pathfinder Serial 1 Register N616H. Built 1962. Aircraft history and location Aircraft History N616H - 1962-02-21Piasecki 16H-1 Pathfinder, cn 1, ff: 21Feb62 reg Piasecki Aircraft Corp as N616H, 1962 modified into 16H-1A Pathfinder II, ff: 15Nov65. 14may19 in the Pennsylvania Convention Center, Philadelphia, PA for the Vertical Flight Societys Forum 75. Send Updates Use APP to upload photo @ (optional) When Now? / / Send