CLEAN : Boeing Dreamliners now safe tho battery

The video discusses the safety measures implemented in airplanes, emphasizing the importance of the enclosure in preventing fire and ensuring safety regardless of the root cause. Over 80 potential causal factors have been identified and addressed in the design. The JCA B and JTSB have confirmed that all potential causes have been addressed. Despite the impact on customers, especially in Japan, the solution is comprehensive, and modifications are underway with over 300 people working on them.

What is the significance of the statement regarding the airplane's safety even if the root cause is missed?

What is the current status of the modifications being made to the airplanes?