The plane is flying five-miles up over unpopulated expanses of water. What could anyone possibly see?! If it was hijacked and landed somewhere it's likely in an unpopulated area or an area where people aren't keen to say, "Yeah, I totally saw that plane land in that area there operated by Al-Queda!" I suspect nothing more than just generic engine information in order to make sure maintenance cycles were being adhered to, the engines weren't being operated out of tolerance zones, or that the engines were just in general good-working order. There seems to be *some* conflict between the various agencies involved on how true this engine-data from RR is, mostly Malaysian Airlines seems to be denying it but, really, it's not like they've been totally upfront about everything. I could be mis-remembering things but I think one of the questioned identities was one of the pilots. And while *American* pilots may be more cautious and less likely to cooperate in a hijacking what a Malaysian pilot would do is harder to discern especially when he flying over an unpopulated area and is thousands of miles away from anything "important."