[Code of Federal Regulations] [Title 49, Volume 8] [Revised as of October 1, 2004] From the U.S. Government Printing Office via GPO Access [CITE: 49CFR1503.223] [Page 266] TITLE 49--TRANSPORTATION CHAPTER XII--TRANSPORTATION SECURITY ADMINISTRATION, DEPARTMENT OF HOMELAND SECURITY PART 1503_INVESTIGATIVE AND ENFORCEMENT PROCEDURES--Table of Contents Subpart G_Rules of Practice in Transportation Security Administration (TSA) Civil Penalty Actions Sec. 1503.223 Standard of proof. The administrative law judge may issue an initial decision or may rule in a party's favor only if the decision or ruling is supported by, and in accordance with, the reliable, probative, and substantial evidence contained in the record. In order to prevail, the party with the burden of proof must prove the party's case or defense by a preponderance of reliable, probative, and substantial evidence.