A rescue worker holds the second flight data recorder, or known as the "black box", of the crashed CRJ-200 jet, which was salvaged out of the lake in Baotou, north China's Inner Mongolia Autonomous Region, Nov. 24, 2004. (Xinhua Photo)

The second black box of the crashed CRJ-200 plane was also found Wednesday morning in Baotou City of Inner Mongolia Autonomous Region.

The second black box, or the flight data recorder, was found at 12:49 a.m. Wednesday. The first of the two black boxes, the cabin voice recorder (CVR), which was found at 11:40 a.m. Wednesday had received some damages and need to be taken to Beijing for further study, said experts at the site of the air crash.

A 50-seat short-haul jet CRJ-200, with 47 passengers and six crew members aboard, left Baotou in Inner Mongolia Autonomous Region for east China metropolis Shanghai at 8:21 a.m. Sunday, but crashed into the lake of Nanhai Park shortly after it took off.

All of the people aboard, together with at least one senior person on the ground, were killed.