The U.S. Federal Aviation Administration issued a "continued airworthiness notification" for Boeing Co.'s fleet of 737 MAX aircraft after a 737-8 jet used by Ethiopian Airlines crashed shortly after take-off March 10, killing all 157 people on board.
The FAA said it was supporting the Ethiopian Accident Investigation Bureau's investigation into the crash, but deems the related Boeing model safe to fly. However, the aviation authority noted that the U.S. is expected to mandate "design changes" to the Boeing model in question by April.
Boeing later confirmed that it expects to deploy flight control software enhancements for the 737 MAX jets "in the coming weeks."
Meanwhile, Singapore joined Indonesia and China in temporarily grounding flights of all 737 MAX aircraft in and out of the countries after the crash. Ethiopian Airlines also canceled the operations of all its 737 MAX 8 jets.
The FAA also ruled out any similarities between the Ethiopian Airlines incident and the Lion Air crash of October 2018, which also involved a 737 MAX 8 plane crashing minutes after take-off and killing 189 people on board, pending data from the ongoing investigation.