Section 120.13 - Refusal to submit to a drug or alcohol test by a Part 63 certificate holder(a) This section applies to all individuals who hold a certificate under part 63 of this chapter and who are subject to drug and alcohol testing under this part.(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