2 ms·This used to be kept in paper log books. Now these records are computerized.by engi_nerd 11y agoThis used to be kept in paper log books. Now these records are computerized.ptaipale 11y agoYes of course, "in the books" was just an idiom here (perhaps not the exactly correct one). What has been done to the plane is a matter of record and can be checked.engi_nerd 11y agoOf course. I wasn't disagreeing with you.