Boeing Co.’s sophisticated new aircraft, the 787 Dreamliner, will undergo a comprehensive review of its critical systems by regulators, the US Department of Transportation said yesterday after a series of problems in recent weeks.

The review of the jet will include design, manufacture and assembly, including a battery that caught fire on an empty 787 parked in Boston on Monday. Adding to the tally of incidents that have tested confidence in the Dreamliner, yesterday the passenger jet suffered a cracked cockpit window and an oil leak on separate flights in Japan.

The US Department of Transportation said it planned to announce more details of the review at a press conference.

In Japan, All Nippon Airways Co. said a domestic flight from Tokyo landed safely at Matsuyama airport in western Japan after a crack developed on the cockpit windscreen, and the plane’s return to Tokyo was cancelled.

The same airline later said oil was found leaking from an engine of a 787 Dreamliner after the plane landed at Miyazaki airport in southern Japan.

An airline spokeswoman said it later returned to Tokyo after some delay.

No one was injured in either incident. (Reuters)

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