No, he is saying that there were no incident reports for that registration number (or at least, not one regarding severe turbulence seven years ago).
I just did a search of the 'Net. I found a reference to a similar incident involving a A-300 enroute between Miami and San Juan, PR, in 1996. But, nothing regarding this particular registration number and no previous reference to the incident cited (although I admit that I vaguely remember it).
A search for the registration number yields a few hits on aircraft registries, but no further information about the plane.
I've been trying to keep an open mind, avoiding jumping to a conclusion of either accident or sabotage. But frankly, I'm now beginning to wonder if the fix is in.