Helicopter’s propeller breaks, injuring two on oilrig   This file photo shows a helicopter operating in a search and rescue exercise in Vietnam in 2012. Tuoi Tre The rear propeller of a helicopter broke during landing on an oilrig off southern Vung Tau City. The broken parts flew away from the plane, hitting and injuring two workers on the rig. At 10 am on Thursday, a Mi-17 helicopter of the Southern Aviation Service Company was landing on oilrig RP3 at the Dragon Oil Field of the Vietnamese-Russian oil and gas joint venture Vietsovpetro when its rear propeller collided with the metal guard-net surrounding the landing strip. The clash caused the propeller to break, and parts flew away from the plane, hitting two workers on the rig and causing serious injuries. The injured were taken ashore to Vietsovpetrol’s Vietnam-Russia Health Center for emergency treatment. The helicopter is now being kept at the rig pending repair by the Southern Aviation Service Company. The helicopter will be fixed with a new propeller before it flies back to the mainland, the company said. The Southern Helicopter Company is investigating the cause of the collision. TUOITRENEWS