Helicopter Sikorsky S-61N Mk.II Serial 61-742 Register PH-NZF used by KLM helikopters. Built 1975. Aircraft history and location Aircraft History PH-NZF KLM helikopters 1975-03-27Sikorsky S-61N-56 c/n 61-742, ff:? del KLM Noordzee Helikopters as PH-NZF, 27Mar75 other regs: G-BHPB, PH-NZF, OY-HDZ, ZS-RDY. Send Updates Use APP to upload photo @ (optional) When Now? / / Send