Air france 296 "Pilot v. Plane"
Did France ever figure out if the Black Boxes were tampered with or swapped out?
shareYes and no.
[Airbus made a detailed rebuttal of these claims in a document published in 1991. Airbus contends that the independent investigator employed by the filmmakers made an error when synchronising the recordings based on a misunderstanding of how the "Radio Transmit" parameter on the flight data recorder functioned.]
No idea how to confirm or deny the claims of airbus, but there it is.