Indonesian investigators have said the Lion Air plane that crashed last month killing 189 people was not airworthy and should have been grounded.
The Boeing 737 Max plane crashed into the Java Sea shortly after departing Jakarta on 29 October.
A preliminary report has found technical problems had been reported on previous flights.
The 737 Max is a new version of Boeing’s original 737 and has become its fastest selling plane.
The preliminary report details what is known by authorities about the short time the plane was in the air, but investigators said it does not give a definitive cause for the accident.