In Tokyo today, a United Airlines 787 Dreamliner sat at a gate. Toru Hanai /Reuters /Landov hide caption

itoggle caption Toru Hanai /Reuters /Landov

An All Nippon Airways flight sits at Takamatsu airport in Takamatsu, Japan, after it made an emergency landing Wednesday. Yasufumi Nagao/Yomiuri Shimbun/AP hide caption

itoggle caption Yasufumi Nagao/Yomiuri Shimbun/AP

The interior of a United Airlines Boeing 787 Dreamliner. Kevork Djansezian/Getty Images hide caption

itoggle caption Kevork Djansezian/Getty Images

A Japan Airlines Boeing 787 Dreamliner jet aircraft is surrounded by emergency vehicles while parked at a Terminal E gate at Logan International Airport in Boston on Monday. A small electrical fire filled the cabin of the JAL aircraft with smoke about 15 minutes after it landed in Boston. Stephan Savoia/AP hide caption

itoggle caption Stephan Savoia/AP