norman5,
no, they don't test for marijuana as far as I know.
Just two advises:
- if you did really smoke "for mistake", try to be smarter next time and not to endanger your career, and your health.
- do not take seriously those who write you to give up dreming to be a pilot because you are a crazy- psycho anti-social drug-addicted, and they you find them at the pub next door completely hammered after 15 pints of lagers.
Bye