The worst-case example was the McDonnell Douglas DC-10 grounding after the American Airlines accident in Chicago in 1979 that killed more than 250 people. The most recent fleet-wide grounding was in 2013, when the Federal Aviation Administration ordered Boeing 787s to stop flying temporarily after a problem with the plane’s battery system was identified. That kind of grounding is pretty rare, and it should be, too. What Boeing engineered to isolate that problem was to first conduct an extensive analysis of the battery packs. Boeing designed a stainless steel box into which the batteries were installed, and it was vented to the atmosphere.

Source: Daily Nation March 12, 2019 08:03 UTC