Boeing will not be able to resume flights of the 737 MAX family aircraft until 2020, writes The Wall Street Journal. The company will not be able to provide the final report on fixing the problems to the US Federal Aviation Administration (FAA) until September or October, and it will take another two months to receive FAA approval.

The company will be able to meet such deadlines only if the experts do not discover new problems.
The new problem is more serious than expected - it cannot be fixed by software alone. It turned out that the failure of one chip of the control system leads to uncontrolled rearrangement of the stabilizer.
Recently, a potential risk to the Boeing 737 MAX was found during simulator testing - during the test, it took pilots a long time to activate the stabilizer trim, found out . Reuters
It also turned out that manual adjustment of the stabilizer at high speed requires a lot of physical strength from the pilot. This is one of the factors in the crash of the Ethiopian Boeing.
Last month, the FAA expected the 737 MAX could be certified as early as the end of June, but that won't happen until July 8, and the airliner won't be able to resume flights until October.

Boeing 737 MAX will not take off for at least another six months