[Code of Federal Regulations] [Title 14, Volume 2] [Revised as of January 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 14CFR137.23] [Page 769] TITLE 14--AERONAUTICSAND SPACE CHAPTER I--FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) PART 137--AGRICULTURAL AIRCRAFT OPERATIONS--Table of Contents Subpart B--Certification Rules Sec. 137.23 Carriage of narcotic drugs, marihuana, and depressant or stimulant drugs or substances. If the holder of a certificate issued under this part permits any aircraft owned or leased by that holder to be engaged in any operation that the certificate holder knows to be in violation of Sec. 91.19(a) of this chapter, that operation is a basis for suspending or revoking the certificate. [Doc. No. 12035, 38 FR 17493, July 2, 1973, as amended by Amdt. 137-12, 54 FR 34332, Aug. 18, 1989] [[Page 770]]