Helicopter Mil Mi-171 Serial 59489611084 Register SMH-4302 CH-596 used by Sri Lanka Air Force. Built 1994. Aircraft history and location Aircraft History CH-596 Sri Lanka Air Force c/n 59 489 61 1084 / 59489611084 SLAF re-registered to SMH-4302 SMH-4302 Sri Lanka Air Force SLAF ex CH-596 Send Updates Use APP to upload photo @ (optional) When Now? / / Send