As the original question was about JAR implementation, some answers can be obtained by reading an article on 'The JAA's Operations Standardisation Team Visit Programme' published in the June edition of the UK Flight Safety Committee's magazine 'focus on commercial aviation safety'. A copy arrived through the mail today - which seems pretty good timing!
Information as to how you could obtain a copy can be gained through the UKFSC website which is, unsurprisingly,
www.ukfsc.co.uk.