Has he looked at the pinned thread at the top of the forum? As BV said, it's some time since I went through OASC (24 years ago for me), but I don't remember needing to know this amount of detail. Yes you need to know what the job you are applying for pertains to, and need a good understanding of current affairs, but I doubt they expect him to know all the ins and outs. Do RAF Career Advice Offices still provide practice interviews (do they still exist)? Has he tried contacting a relevant Sqn to see if they will host him for a day (I visited a couple of Sqn's and even managed to bag a few trips on MEs)? What they will be looking for is someone who is proactive in his approach, explaining that you got your info from your dad asking questions on an open forum may not be what they are looking for (they do generally ask what you know and how you know it).