The Hitcher, as a security "expert", would you agree with the following statements?
1) A person, who has absolutely no need be in possession of them, is attempting to obtain detailed technical publications pertaining to engines fitted to various types of commercial airliners. This same person holds an airside pass and apparently has the opportunity to access aircraft unsupervised. This individual has demonstrated that they hold a grudge against 2 groups of people who are directly responsible for the safe operation of these aircraft.
This is perfectly acceptable, and is in no way a cause for concern
2) An engineer who holds an airside pass may have full and unfettered access to any aircraft he or she must perform work on. They may carry all sorts of sharp, pointy tools as required to carry out their duties. But a yoghurt may not be taken through a security checkpoint by the same engineer in case it is a threat to aviation security.
This is perfectly logical.
Over to you The Hitcher. I wait with bated breath for the definitive opinion of a "senior licensed aviation security officer". ( Whatever that is....)