14 C.F.R. § 63.12
(a) A conviction for the violation of any Federal or state statute relating to the growing, processing, manufacture, sale, disposition, possession, transportation, or importation of narcotic drugs, marihuana, or depressant or stimulant drugs or substances is grounds for—
(b) The commission of an act prohibited by § 91.17(a) or § 91.19(a) of this chapter is grounds for—
[Docket 21956, 50 FR 15379, Apr. 17, 1985, as amended by Amdt. 63-27, 54 FR 34330, Aug. 18, 1989]