Officials: Smoke filled the cabin of Dreamliner in Logan fire — minutes after passengers had disembarked

By Eric Moskowitz, Glen Johnson, Katie Johnston, John R. Ellement and Martin Finucane, Globe Staff

A fire that began in a battery in the underbelly of a Japan Airlines Boeing 787 jetliner at Logan International Airport this morning filled the plane’s cabin with heavy smoke just minutes after passengers had disembarked, Massport officials said today.

Flight 8 arrived from Tokyo at about 10:15 a.m. carrying 173 passengers and 11 crew members, Massport aviation director Edward Freni said at a news conference. After passengers left the plane through the jetbridge, at about 10:30 a.m., airline mechanics reported smoke. Massport firefighters were there within three minutes, he said.

Massport Fire Rescue Chief Robert J. Donahue said firefighters encountered heavy smoke in the entire cabin of the plane and used thermal imaging devices to determine the source of the fire.

“We found a fire condition about ‘midships in the avionics compartment underneath,” he said. He said the fire began in a battery that was part of an auxiliary power unit that is only used when the plane is on the ground and its engines are turned off.

The fire was extinguished within an hour, officials said. Donahue said firefighters used the halotron fire extinguishing agent. No injuries were reported.

The National Transportation Safety Board said it would send investigators to Boston to look into the incident, the latest of several electrical and mechanical mishaps involving the much-anticipated high-tech plane known as the Dreamliner.

On Dec. 5, the Federal Aviation Administration ordered inspections of all 38 787s in service after it received reports of fuel leaks on two aircraft operated by foreign airlines. Several incorrectly assembled fuel couplings on in-service and in-production 787s were subsequently discovered. The conditions could result in fuel leaks that could lead to a loss of power or fire, according to the FAA directive.

Boeing is also investigating electrical issues on the Dreamliner after incidents involving at least four aircraft, according to several published news reports. A United Airlines flight from Houston to Newark was diverted to New Orleans last month after an electrical problem occurred mid-flight, and Qatar Airways later said it grounded a 787 for the same reason. United took another jet out of service to replace a power panel and generator, and a power panel on an aircraft set to be delivered to Qatar Airways was replaced following a test flight.

The Dreamliner, which is made with durable, lightweight composites, relies heavily on its electrical system, using more electricity to power its primary and secondary systems than conventional planes do.

Freni said he believed that this particular plane had gone into service only recently, in the past few weeks.

He said he had seen the plane land from his office. “I saw it taxiing. There was no indication of smoke at that point,” he said.

Flight 8 was expected to turn around and fly back this afternoon, but it has now been grounded.

The Dreamliner nonstop flight connecting Boston and Tokyo has been a pivotal part of Governor Deval Patrick’s efforts to expand trade between Massachusetts and Asia.

A Federal Aviation Administration spokesman didn’t immediately have a comment. The Japan Airlines public relations office didn’t immediately return a message seeking comment. The Boeing public relations office didn’t immediately have a comment.

Steve MacDonald, a spokesman for the Boston Fire Department, which assisted Massport fire crews, said the Boston department responded at 10:40 a.m.