Helicopter Mil Mi-17V-5 Serial 144M07 Register SMH-4308 CH-581 used by Sri Lanka Air Force. Built 2006. Aircraft history and location Aircraft History CH-581 Sri Lanka Air Force c/n 144M07 SLAF re-registered to SMH-4308 SMH-4308 Sri Lanka Air Force SLAF ex CH-581 Send Updates Use APP to upload photo @ (optional) When Now? / / Send