After the 2008 Sichuan earthquake , Z-8 helicopter production received a massive boost as the event had proved the helicopter 's value in humanitarian missions . New engine acquisition and design changes were implemented in order to iron out some of known existing issues which had affected the Z-8 for decades . The Chinese People 's Armed Police ordered 18 Z-8 helicopters ; by 2013 , at least five helicopters had been delivered , the majority of these having been assigned to forestry fire fighting units . During subsequent earthquake relief operations , Z-8 helicopters have been deployed to perform rescue and logistical missions
2008 Sichuan earthquake
2008 Sichuan earthquake
Aérospatiale SA 321 Super Frelon