(b) Refusal by the holder of a certificate issued under part 63 of this chapter to take a drug or alcohol test required under the provisions of this part is grounds for:
(1) Denial of an application for any certificate or rating issued under part 63 of this chapter for a period of up to 1 year after the date of such refusal; and
(2) Suspension or revocation of any certificate or rating issued under part 63 of this chapter.
[Doc. No. FAA–2008–0937, 74 FR 22653, May 14, 2009; Amdt. 120–0A, 75 FR 3153, Jan. 20, 2010]