Not to offend, but why would the FAA have records from that long ago? Where would such records be kept? It seems that this would not be very important for the FAA, but other organizations that deal with security like the FBI and TSA may have historical files on it? Just from my FAA perspective, I don't know why the FAA would have that information or where it would be kept if it even existed. Historical regulations and regulatory information are much more important to them. As you go back in accident/incident history it drops off very quickly after a certain year, as the data was just never captured , and that's for events that fall into those specific categories. The FOIA request just deals with information that they may actually have, just because something happened or did not doesn't mean they have the information supporting it, just due to normal circumstances through time. Hope that doesn't come off too harsh or anything, but if a certain agency does have that historical information, I suppose the trick is figuring out which one it is. There's likely more in newspaper archives I'd imagine?