British aviation investigators say a 2013 fire on a Boeing 787 Dreamliner started in a battery for the plane's emergency locator transmitter, triggering recommendations to improve safety on similar aircraft.
The Air Accidents Investigations Branch says in a report released Wednesday that crossed and trapped wires under the battery compartment created a short circuit on the Ethiopian Airlines-operated plane parked at London's Heathrow Airport on July 12, 2013. The fire then spread to the fuselage, which is made of composite material.
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Among the recommendations, the branch said the U.S. Federal Aviation Administration, together with similar bodies in Europe and Canada, should conduct a review of equipment powered by lithium metal batteries to ensure they have "an acceptable level of circuit protection."