The Wall Street Journal reported Sunday that fixing the 737 Max's faulty flight-control software and completing other steps to start carrying passengers will likely stretch into 2020.
American Airlines says that the removal of the aircraft means that it will have to cancel around 115 flights each day, and has said that it will cost the company upwards of $185 million during its second quarter this year.
Statistics from Boeing revealed that to date, orders for the aircraft were in negative territory for the first six months, with a total of minus 119 net orders to the end of June.
That issue requires an additional patch by Boeing that will be included in the final package of flight-control software to be reviewed by global regulators before the Max is clear for flight. It said it "remains confident" that the Boeing plane will be recertified this year.
"Boeing will not offer the 737 Max for certification by the FAA until we have satisfied all requirements for certification of the Max and it's safe return to service", the company said in a statement at the time.More news: Partial lunar eclipse to be visible in India on July 17
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There was a concern that the new design would cause the plane's nose to tip upward and lead to a stall. The plane was grounded in March following two fatal crashes.
United said Friday that it's dropping its 14 Max jets from the schedule till November 3 - a month longer than previously deliberate. That software - known as the Maneuvering Characteristics Augmentation System (MCAS) - helped the plane compensate for the design of the aircraft.
USA airlines and individual nations and companies throughout the world began canceling flights using the Boeing 737 Max 8 and Max 9 during the spring after Ethiopian Airlines Flight 302 crashed on March 10.
Boeing Co.is working to fix flight retain watch over software program that perceived to play a job in the crashes in Indonesia and Ethiopia, in line with preliminary accident reports. Boeing has said the airplane is now undergoing a flight-control software update, one that has yet to be approved by the Federal Aviation Administration (FAA).
The grounding has taken a sharp financial toll on US airlines and their customers.