---identifier: "/us/cfr/t33/s101.525"source: "ecfr"legal_status: "authoritative_unofficial"title: "33 CFR § 101.525 - TSA list of cancelled TWICs."title_number: 33title_name: "Navigation and Navigable Waters"section_number: "101.525"section_name: "TSA list of cancelled TWICs."chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"subchapter_number: "H"subchapter_name: "MARITIME SECURITY"part_number: "101"part_name: "MARITIME SECURITY: GENERAL"positive_law: falsecurrency: "2026-03-24"last_updated: "2026-03-24"format_version: "1.1.0"generator: "[email protected]"authority: "46 U.S.C. 70101-70104 and 70124; Executive Order 12656, 3 CFR, 1988 Comp., p. 585; 33 CFR 1.05-1, 6.04-11, 6.14, 6.16, and 6.19; Department of Homeland Security Delegation No. 00170.1, Revision No. 01.4."regulatory_source: "USCG-2003-14792, 68 FR 39278, July 1, 2003, unless otherwise noted."cfr_part: "101"---
Identifier
/us/cfr/t33/s101.525
Currency
2026-03-24
Positive Law
No
Updated
2026-03-24
Chapter
Coast Guard, Department of Homeland Security
Authority
46 U.S.C. 70101-70104 and 70124; Executive Order 12656, 3 CFR, 1988 Comp., p. 585; 33 CFR 1.05-1, 6.04-11, 6.14, 6.16, and 6.19; Department of Homeland Security Delegation No. 00170.1, Revision No. 01... 46 U.S.C. 70101-70104 and 70124; Executive Order 12656, 3 CFR, 1988 Comp., p. 585; 33 CFR 1.05-1, 6.04-11, 6.14, 6.16, and 6.19; Department of Homeland Security Delegation No. 00170.1, Revision No. 01.4.
# 101.525 TSA list of cancelled TWICs.(a) At Maritime Security (MARSEC) Level 1, the card validity check must be conducted using information from the TSA that is no more than 7 days old.(b) At MARSEC Level 2, the card validity check must be conducted using information from the TSA that is no more than 1 day old.(c) At MARSEC Level 3, the card validity check must be conducted using information from the TSA that is no more than 1 day old.(d) The list of cancelled TWICs used to conduct the card validity check must be updated within 12 hours of any increase in MARSEC level, no matter when the information was last updated.(e) Only the most recently obtained list of cancelled TWICs must be used to conduct card validity checks.[USCG-2007-28915, 81 FR 57709, Aug. 23, 2016]