Ethiopian Airlines

Updated at 5:27 p.m. ET

The crew of Ethiopian Airlines Flight 302 followed procedures from Boeing but could not stop the plane from repeatedly nose-diving and ultimately crashing last month, killing all 157 people on board, Ethiopian officials said Thursday.

Presenting the preliminary report into the crash, Ethiopian Transport Minister Dagmawit Moges told reporters in Addis Ababa that "the crew performed all the procedures repeatedly provided by the manufacturer but was not able to control the aircraft."

Updated at 9:20 p.m. ET

The Federal Aviation Administration says it plans to require a series of design changes to the Boeing 737 Max fleet after a pair of fatal plane crashes including one Sunday in Ethiopia that killed all 157 people on board. Airlines in other countries have grounded their Boeing 737 Max jets.

As NPR's Russell Lewis reports, the FAA plans to order the changes by next month.