General view of the Air Ethiopian Boeing 787 Dreamliner 'Queen of Sheba' aeroplane, on the runway near Terminal 3, at Heathrow Airport, London, Friday July 12, 2013. Two Boeing 787 Dreamliner planes ran into trouble in England on Friday, with a fire on one temporarily shutting down Heathrow Airport and an unspecified technical issue forcing another to turn back to Manchester Airport. The incidents are unwelcome news for Chicago-based Boeing Co., whose Dreamliners were cleared to fly again in April after a four-month grounding due to concerns about overheating batteries. The fire at Heathrow involved an empty Ethiopian Airlines plane, which was parked at a remote stand of the airport after arriving at the airport. British police said the fire is being treated as unexplained, and that there were no passengers on board at the time of the fire. (AP Photo/Sang Tan)
LONDON (AP) - U.K. investigators say they are examining whether an emergency transmitter might have played a role in last week's fire on a Boeing 787 at London's Heathrow Airport.
The Air Accidents Investigation Branch said Tuesday that, while it is premature to speculate on the incident's cause, the "emergency locator transmitter is one of several components being looked at in detail as part of the investigation."
U.K. authorities confirmed that U.S.-based Honeywell - maker of the 787's emergency transmitter - has joined the probe into the fire on a parked Ethiopian Airlines' Dreamliner.
The fire brought back memories of the two smoldering lithium-ion batteries that led officials to temporarily ground 787s worldwide in January. Flights resumed after the battery systems were redesigned.
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