@CNN: Pilots from the three American carriers that fly Boeing 737 MAX planes have tested software changes to a key stabilization system that is believed to have played a role in two recent plane crashes https://t.co/DvtxFG0g5u

@CNN: Pilots from the three American carriers that fly Boeing 737 MAX planes have tested software changes to a key stabilization system that is believed to have played a role in two recent plane crashes https://t.co/DvtxFG0g5u