I don't know how they mark the aptitude tests but when I went to OASC I passed for RAF pilot but due lack of demand I did not get in then and due to age I did not get a 2nd chance. About 6 months later I applied for RN - the min age being higher. I did not need to resit the aptitude tests, the RAF results being used but I did not pass for pilot with the RN. I did however get offered observer. Read into that what you will. I have, however, enjoyed all my time in the RN.