I can remember sending off resumes/CV's loaded with erroneous info. A modern resume should be one page; two pages, tops, even for an old fart like me. Anything more doesn't get read. It should address all pertinent information (qualifications, experience) relevant to the job being sought, nothing more. The goal of a resume is to get an interview, not get the job. Gaps in work history are common and should not be avoided. If there is a period of time employed as a bag packer at Woolies, then state it, but also add that you were continuing studies towards ATPL or something similar at the time.