With so much of the aircraft 's superstructure gone Removing , the left wing induced Causation drag on the fuselage , yawing Motion_directional it violently to the left Departing .

This ice disrupted Hindering airflow over the jet , increasing Cause_change_of_position_on_a_scale drag and reducing lift , which prevented Preventing_or_letting the jet from lifting off Motion_directional the runway .

The band took Conquering a break Process_end before playing Competition the drag festival Wigstock on September 2 , 2001 , and then took Conquering time out of their tour Traveling schedule Arranging after band member Lauren Roselli Johnson gave Giving birth to a child .

The accident Catastrophe was investigated Check by the Canadian Aviation Safety Board ( CASB ) , which determined Deciding the probable cause Causation of the crash Catastrophe was the aircraft 's unexpectedly high drag and reduced lift Motion condition , most likely due Causation to ice contamination on the wings ' leading edges and upper surfaces , as well as underestimated Judgment_communication onboard weight .