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Heathrow 787 plane fire probe

A fire that broke out aboard an Ethiopian Airlines Boeing's 787 Dreamliner occurred in a lithium-powered emergency locator beacon, Reuters reports.

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Honeywell transmitter firm to join 787 fire probe

Air Ethiopian Boeing 787 Dreamliner 'Queen of Sheba' airplane. Credit: Anthony Devlin/PA Wire

US firm Honeywell has been asked to join the investigation into the fire on a Boeing 787 at Heathrow Airport amid reports of a probe into whether the plane's emergency transmitter played a role.

The transmitter sends a signal with the plane's location if it is involved in a crash.

Honeywell would not specify why authorities asked it to participate in the investigation.

"It's far too premature to speculate on the cause, or draw conclusions," spokesman Steve Brecken said. He directed other questions to the US National Transportation Safety Board, which is helping with the investigation.

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