The flight data of the crashed Ethiopian Boeing 737MAX-8 tells that aircraft suddenly lost altitude and crashed.
Based on the flight data of Ethiopian MAX8, its altitude was fluctuating between 8600 and 7200 ft in last 10 seconds of the flight and suddenly lost altitude.
Considering previous Lion Air crash, its seems like Ethiopian MAX’s flight system received high AOA input which resulted in an aerodynamic stall, and plunged to crash.
In a press conference the Ethiopian Airlines CEO stated that the pilot of #ET302 reported difficulties with the aircraft to ATC. The aircraft was given clearance to return to the airport.
All 149 including 32 Kenyans and 17 Ethiopians died in the crash.
The airline took delivery of the CFM International Leap-1B-powered brand new twinjet MAX8 on 15 Nov 2018.