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A Boeing 787 Dreamliner operated by Japan Airlines (JAL) was delayed more than three hours due to a fuel leak at Boston’s Logan International Airport, just a day after a fire erupted on a different JAL Dreamliner parked at a gate.

At about 12:25 p.m. Boston time Tuesday, a JAL Dreamliner headed to Tokyo was taxiing out to the runway for takeoff when a fuel leak forced it to be towed back to the terminal.

Airport spokesman Richard Walsh said the plane departed for Tokyo about three and a half hours late. He confirmed the leak dumped about 40 gallons of fuel on the taxi way.

The cause of the gas leak was not disclosed.

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Boeing spokeswoman Julie O’Donnell said, “We are aware of the incident and are working with our customer.”

This was a different airplane than the one that caught fire Monday at Logan.

The cause of that fire, which included the ignition of a lithium ion battery that starts the jet’s auxiliary power unit, is being investigated by Boeing and the National Transportation Safety Board. The NTSB said Tuesday the fire damage centered on a rack of lithium ion batteries in the electronics bay.

The plane involved in the fire is grounded at Logan. Its return flight to Tokyo on Monday was canceled.

The plane that had the fuel leak Tuesday was the first JAL jet to attempt to return to Tokyo since Monday’s incident.

Dominic Gates: (206) 464-2963 or

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