installation error
I would like to understand that the software user manual was not correctly understood by the crew ?
That document is very important because a software user is not an aircraft user. The software user is a total stranger to the bit by bit process. Every word of that written process (the user manual) must be perfectly clear. Mostly the soft user don't use the document, or don't have it.
IT is a still new culture where we jumped too quickly. It looks like a play,but isn't a play.