Federal investigators slammed Boeing for 'blatantly violating' the rules by sharing unproven speculation about the 737 Max blowout

• The NTSB said Boeing "blatantly violated" rules about investigations.
• It said a Boeing exec made "unsubstantiated speculations" about the Alaska Airlines blowout .
• It will coordinate with the DoJ, which is considering criminal charges over the blowout.

Boeing has apologized after the National Transportation Safety Board said it "blatantly violated" rules about investigations.