Not sure if thats all to it. It seems rather curious that US grounding the aircraft (and Boeing advising to do so) right after about a day or so after black box

Not sure if thats all to it. It seems rather curious that US grounding the aircraft (and Boeing advising to do so) right after about a day or so after black boxes being found. Also, Ethiopian authorities issued a statement about the pilots reporting flight control issues rather than any external factors. I wouldn't be surprised if they already have priliminary evidence that there's an issue with the aircraft.