Semisub :
Myself and another engineer did the major inspection on that machine whilst Redhill.There was nothing iffy about it mainly calendar lifed items if I recall correctly. Beyond that I really cannot remember what else was involved. The Serbian Police will have copies of all the inspections - so dont ask me for them.
Low flying hours was normal for them ie 1000 Hrs in 7 or 8 years. After it left us I have no idea what happend to it. The records section no longer resides at Redhill and I have no idea where they are kept now.
Your best bet is to employ some one to do a survey and investigate the history thoroughly.