If you admit to class A use in your interview at AFCO or OASC you are unlikely to proceed. Class B& C, provided you can explain it was one off and maintain that you are now anti drugs etc you will likely get a drugs waiver. This waiver will then sit in your dossier for life.
The RAF operate CDT, and you can expect to get tested approx once every 2 years on average. Refusal to produce a sample (you can do that and no you are not forced to wait and drink water until you do) will result in the assumption of guilt and you will be discharged. Producing a positive sample, you have the opportunity to provide an explanation and request for your B sample to be tested (at your own expense). After which you will then be discharged if your B sample shows the same (has in every B sample tested so far). If you do not have an outsatnding reason for drugs in your system then you are discharged also.
Common excuses that always fail:
- My drink was spiked
- I ate some cake in Amsterdam/Party/Friends and dont know what it was
- Some girl/boy I kissed put something in my mouth
- I was at a party where others were smoking Cannabis so it must be passive inhalation
- I was too drunk.
Now if you are under 21 and you test postive for cannabis (other Class C as well) then you may qualify for the Early Intervention Programme. If so, ie your CO endorses it (which has only ever happened once in the RAF) you attend a drugs rehab weekend, then get tested every time CDT pitches up for at least the next 5 years. You are placed on a Formal Warning and are one step from being kicked out.
Advice - tried Class A drugs - dont bother applying. Tried Class B or C then own up and get a drugs waiver. When you are in - dont bother trying drugs. Its simple