casino335 vbmenu_register("postmenu_3232937", true);
I sat OASC last year and was luck enough to make it first time. Some of my friends tho didn't. A couple of those were guys who sat a part aptitude test (at OASC) to join University Air Squadrons as Volunteer Reserves and then a full one when they went to OASC again for DE/Bursary places.
When they failed it twice the RAF gave them the usual line of it being twice in a life time but they argued that the first test for the UASs was only part of the test (pilot component only) - they were allowed to resit it.
I have another friend who was allowed to sit the test 3 times (the full test this times) as in November '06 it changed to incorporate different exersizes and s/he was able to argue that she would not have sat the new test twice.
I don't know how useful this will be as all these I speak of are on UASs so their letters of application (and/or complaint and appeal) will be accompanied by a letter from their Squadron Leader bosses - which probably makes a difference. But it does show that 2 is not the limit (cirumstances depending).
Good Luck!