European Union aviation authority grounds Boeing 737 Max jets in all its 26 countries.
Great Britain, Ireland, Australia, and France have grounded their 737 max fleets.
In an airworthiness notification released Monday, the FAA said the company needed to make, “flight control system enhancements” on both models in the next few weeks.
But the FAA is not ordering airlines to ground the planes.
The notice comes in the wake of a deadly plane crash in Ethiopia over the weekend.
157 people died.
The same model of jet crashed near Jakarta Indonesia in October, killing all 189 people on board.
Officials stress that the investigation has just begun and they don’t have enough data to draw conclusions.
Still, U.S. authorities want changes made to systems on both models by April.
The changes will apply to 74 in the U.S. and 387 airplanes flying worldwide.