( CNN ) -- An All Nippon Airways 787 Dreamliner was held in Tokyo after a mechanical problem , the fourth such incident for Dreamliners in 10 days . The plane was delayed Thursday after a cockpit message indicated a problem with the power supply to its air-conditioning system . More than 100 passengers who were supposed to fly to Frankfurt departed on a different plane eight hours after the scheduled departure time , ANA said . Earlier this week , a Denver-bound United Airlines Dreamliner was diverted back to Houston after a problem with its brake indicator . A week before , two United Dreamliners made unscheduled landings . A flight from Denver to Tokyo was diverted to Seattle because of an indicated problem with its oil filter . And a Houston-bound flight from London made an unscheduled landing at Newark 's Liberty International Airport due to a `` low oil indication . '' In each case , the plane landed without incident and with no passenger injuries , Boeing said . The incidents come six months after the Federal Aviation Administration and other officials grounded the Dreamliner worldwide due to troubles with its battery system . `` The 787 is a great airplane and we know it will continue to receive heightened attention when reliability events occur in service , '' Boeing spokesperson Yvonne Leach said Sunday . Additional Dreamliners . The 787 Dreamliner began service in the U.S. in 2012 . The entire global fleet of 50 Dreamliners was grounded in January after two battery overheating incidents triggered concerns among safety officials . Among the Dreamliner 's innovative designs is a battery system that uses new , lightweight lithium-ion batteries . In April , the FAA ordered all 787 operators to make specific modifications . United has been flying its fleet of six 787s since May 20 . United is the sole U.S. operator of the airplane , which boasts high fuel efficiency due to the lightweight carbon-composite materials used in its wings and fuselage . In an apparent show of confidence in the new airliner , United announced Tuesday that it 's ordering 20 additional Dreamliners , specifically the 787-10 model , a longer version of the plane . The plane represents a new generation of efficient wide-body , long-range aircraft , helping to make it among the world 's most heavily scrutinized aircraft . Airlines worldwide have committed to buying the plane , and hundreds of millions of dollars are riding on Dreamliner 's success . On June 14 , Boeing rival Airbus flew a similar airliner , its highly anticipated A350 XWB , for the first time at its facility in Toulouse , France .
A Boeing 737 is held in flight after issue with fuel supply . Problem is fourth mechanical failure for a Dreamliner in 10 days . On landing , issue with brake indicator diverted flight . Boeing : ` ` We know it will continue to receive heightened scrutiny . ''