Security Directives and Emergency Amendments

Cybersecurity

May 3, 2025

• SD Pipeline-2021-01E – Enhancing Pipeline Cybersecurity
• SD 1580/82-2022-01D – Rail Cybersecurity Mitigation Actions and Testing
• SD Pipeline-2021-02F – Pipeline Cybersecurity Mitigation Actions, Contingency Planning, and Testing

October 23, 2024

• SD 1580-21-01C - Enhancing Rail Cybersecurity
• SD 1582-21-01C - Enhancing Public Transportation and Passenger Railroad Cybersecurity

July 26, 2024

• SD-Pipeline-2021-02E - Pipeline Cybersecurity Mitigation Actions, Contingency Planning, and Testing

July 1, 2024

• SD 1580/82-2022-01C - Rail Cybersecurity Mitigation Actions and Testing

May 29, 2024

• SD-Pipeline-2021-01D - Enhancing Pipeline Cybersecurity

October 23, 2023

• SD 1580/1582-2022-01A - Rail Cybersecurity Mitigation Actions and Testing
• SD 1580-21-01B - Enhancing Rail Cybersecurity
• SD 1582-21-01B - Enhancing Public Transportation and Passenger Railroad Cybersecurity

July 26, 2023

• SD-Pipeline-2021-02D - Pipeline Cybersecurity Mitigation Actions, Contingency Planning, and Testing

May 29, 2023

• SD-Pipeline-2021-01C - Enhancing Pipeline Cybersecurity

October 18, 2022

• SD 1580-21-01A - Enhancing Rail Cybersecurity
• SD 1580-21-01A - Enhancing Rail Cybersecurity (Correction Memo)
• SD 1582-21-01A - Enhancing Public Transportation and Passenger Railroad Cybersecurity
• SD 1582-21-01A - Enhancing Public Transportation and Passenger Railroad Cybersecurity (Correction Memo)
• SD 1580/82-2022-01 - Rail Cybersecurity Mitigation Actions and Testing
• SD 1580/82-2022-01 - Rail Cybersecurity Mitigation Actions and Testing (Correction Memo)

July 21, 2022

• SD-Pipeline-2021-02C - Pipeline Cybersecurity Mitigation Actions, Contingency Planning, and Testing

June 9, 2022

• SD-Pipeline-2021-01B - Enhancing Pipeline Cybersecurity
• SD 1580-21-01 - Enhancing Rail Cybersecurity
• SD 1582-21-01 - Enhancing Public Transportation and Passenger Railroad Cybersecurity
• SD-Pipeline-2021-02B - Pipeline Cybersecurity Mitigation Actions, Contingency Planning, and Testing
• SD-Pipeline-2021-02B - Table of Implementation Timeframes  (Attachment 1)

International Travel

December 29, 2021

• Proclamation on Revoking Proclamation 10315
• EA 1546-21-03 Series Cancellation - Security Measures – Coronavirus
• EA 1546-21-03 Series Cancellation - Emergency Amendment
• SD 1544-21-04 Series Cancellation - Security Measures – Coronavirus
• SD 1544-21-04 Series Cancellation - Covered Aircraft Operators

Vaccination Requirements

April 4, 2023

• SD 1544-21-03C.pdf
• EA 1546-21-02C.pdf

January 3, 2023

• EA 1546-21-02B.pdf
• SD 1544-21-03B.pdf

November 2, 2022

• SD 1544-21-03A.pdf
• EA 1546-21-02A.pdf

November 5, 2021

• SD 1544-21-03

Face Mask Requirements

March 16, 2022

• EA 1546-21-01D
• SD 1542-21-01D
• SD 1544-21-02D
• SD 1582-21-01D

January 19, 2022

• EA 1546-21-01C
• SD 1542-21-01C
• SD 1544-21-02C
• SD 1582-84-21-01C

August 20, 2021

• EA 1546-21-01B
• SD 1542-21-01B
• SD 1544-21-02B
• SD 1582-84-21-01B

April 30, 2021

• EA 1546-21-01A
• SD 1542-21-01A
• SD 1544-21-02A
• SD 1582-84-21-01A

January 31, 2021

• EA 1546-21-01
• SD 1542-21-01
• SD 1544-21-02
• SD 1582/84-21-01