After more than three months, the company's saga to fix its 787 Dreamliner finally seems to be over. On Saturday, Ethiopian Airlines became the first airline to use the jet for commercial service in a flight from Addis Ababa to Nairobi, International Business Times reports. Japan's All Nippon Airways, one of the carriers with a problematic plane, ran a test flight on Sunday. (Here's proof.)
The U.S. Federal Aviation Administration -- which grounded the Dreamliner back in January after battery failures on two of the planes -- approved Boeing's battery system fix earlier this month.
The Dreamliner, dubbed the "most fuel efficient jet airplane ever," reduces fuel consumption by 20 percent. The cost to develop the airplane was an estimated $20 billion, while, Reuters reports, the battery setback cost the company an estimated $600 million.
But although the Dreamliner is back to flying customers, the cause of the battery issues has yet to be determined, despite the thousands of hours and millions of dollars the company has poured into a fix.
This post was originally published on Smartplanet.com