Keep in mind that the search function
(a) can be quite selective to avoid the padding
(b) has a maximum return of (I think ?) 500 items .. so the padding is a real nuisance searching for old threads ...
For instance, for AF447, try
(a) the advanced search option
(b) keyword "AF447"
(c) posts from "any date" option
(d) search in forums "tech log"
and the result has, as the first entry, the last of the AF447 threads .. which contains links to the earlier items ... around 180 threads, in toto, going back to mid-2009. If I include myself, for instance, in the username box .. this comes down to a dozen or so hits only .. most of which are the thread sequence you are after.
Merry Christmas (regardless of faith) and a prosperous New Year to one and all in the Tech Log family.