Boeing's 787 Dreamliner jet suffered a cracked cockpit window and an oil leak on separate flights in Japan on Friday (January 11), the latest in a series of incidents testing confidence in the sophisticated new aircraft.
All Nippon Airways (ANA) 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 an airport in southern Japan.
ANA said crew noticed a spider web-like crack in a window in front of the pilot's seat about 70 minutes into the flight, which was close to its destination.
A spokesman for the airline said cracks appear a few times every year in other planes and are not a sign of fundamental problems with the 787 Dreamliner.
Earlier this week, a battery fire caused damage to an empty 787 jet operated by Japan Airlines while it was on the ground at Boston airport.
The next day, another plane spilled 40 gallons of fuel onto the taxiway at the same airport after a problem that caused a valve to open, forcing the plane to delay its departure.
On Wednesday (January 9), ANA cancelled a domestic Dreamliner flight due to a brake-control computer glitch.