The NTSB previously issued safety recommendations to the FAA regarding (1) insufficient testing methods and guidance to manage safety risks related to internal short circuits and thermal runaway and (2) the need for external technical intervention. knowledge and expertise to help the FAA ensure the safe introduction of new technologies into aircraft design (NTSB, 2014). In response to the incident, Boeing has since added “triple-layer” protections to lithium-ion batteries (Aviation Week, 2013). Additional cell electrical insulation and cable management significantly reduce the likelihood of short circuits. The entire battery now features a 1/8 inch steel casing designed to contain any combustion or explosion. There is also a ventilation tube to allow gases to escape