Soldiers search for a crashed helicopter in the jungle on the mountain of Xuankou Township of Wenchuan County in southwest China's Sichuan Province, June 1, 2008 during a search and rescue operation. A military transport helicopter engaging in quake relief work near Yingxiu crashed on May 31. There were altogether 19 people on borad including 5 crew members and 14 injured local residents.

A helicopter prepares to look for a crashed helicopter in nearby mountainous area in Yingxiu Township, Wenchuan County, southwest China's Sichuan Province, June 1, 2008.

 Soldiers walk to an appointed zone to look for a crashed helicopter in Yingxiu Township, Wenchuan County, southwest China's Sichuan Province, June 1, 2008.

Soldiers walk to an appointed zone to look for a crashed helicopter in Yingxiu Township, Wenchuan County, southwest China's Sichuan Province, June 1, 2008.

Soldiers take a rest in the jungle on the mountain of Xuankou Township of Wenchuan County in southwest China's Sichuan Province, June 1, 2008 during search and rescue operation for a crashed helicopter.

Photo taken on May 16, 2008 shows that a Mi-171 transport helicopter is ready to transport people from quake-hit Maoxian County, southwest China's Sichuan Province, to a safe place. A Mi-171 transport helicopter engaging in quake relief work near the Yingxiu Township, Wenchuan County in southwest China's Sichuan Province crashed on Saturday afternoon, according to military sources.