Operation was just start POOH tubing completion with ESP cable. On joint no-3 (at string weight of about 10 kdaN) the driller picked up about 3 m and stopped to cut the cable band. After cutting, he further attempted to pull out, but the travelling block started coming down. He tried to control the free fall by applying auxiliary brake. The block continued to descend, the elevator pulled down the hydraulic tong, and elevator came to rest on the hydraulic tong. Finally, the block stopped when the ACS got activated.