Boeing is being probed.
The Justice Department is investigating Boeing’s certification and marketing for its 737 Max planes.
Two have crashed since October, the more recent was Ethiopian airlines 302 earlier this month.
But sources briefed on the matter say the DOJ’s criminal investigation started after the October crash of a Lion Air Flight in Indonesia.
Boeing CEO Dennis Muilenburg said, “We’re united with our airline customers, international regulators and government authorities in our efforts to support the most recent investigation, understand the facts of what happened and help prevent future tragedies.”
Analyst say that insufficient training was likely a factor.
Also, a separate investigation is looking into whether, acting Defense Secretary Patrick Shanahan violated ethics by boosting products from Boeing, his former employer. He denies the claim.