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(CNN) – Investigators looking at the flight simulator taken from the home of Malaysia Airlines Flight 370 Captain Zaharie Ahmad Shah have discovered that some data had been deleted from it, Malaysia's acting transportation minister said Wednesday.
What the revelation means is unclear. It could be another dead end in an investigation that has been full of them so far, or it could provide further evidence for the theory that one or more of the flight crew may have been involved in the plane's disappearance 12 days ago.
Some aviation experts are doubtful anything helpful will come from the simulator at all.
It is pretty common for pilots to have flight simulators at home, says commercial pilot Anthony Roman, founder and CEO of Roman & Associates. Roman himself has one, and says they "eat up a tremendous amount of hard drive."
"You have to periodically delete files. I don't see that as sinister in anyway," says Roman. "However, they need to be investigated, those files need to be recovered."
Moreover, pilots do not need simulators to practice diverting a plane, because it is a very easy thing to do, says aviation analyst and Federal Aviation Administration official.
"I don't think the simulator ... is going to prove to produce any super evidence," says Wallace.
For more analysis from aviation experts Anthony Roman and Steven Wallace.