Boeing 787 Fire Sparked by Stray Tool, La Tribune Says

A fire in a Boeing Co. 787 Dreamliner started when a stray tool in an electrical equipment bay caused a short circuit, French newspaper La Tribune reported.

The fire raises questions about the logic of the plane’s electrical layout because the breakdown in the first bay spread to a second, and the plane had to use emergency electrical-management systems to land, the French newspaper said, citing sources it didn’t identify.

France’s Zodiac Aerospace SA, a subcontractor of United Technologies Corp. subsidiary Hamilton Sundstrand, which is in charge of electrical distribution within the plane, is among the companies reviewing the incident, La Tribune said.

Boeing is based in Chicago and United Technologies’ headquarters is in Hartford, Connecticut.