Additional information on aircraft security, September 11, 2001 events and actions undertaken by airworthiness authorities are available from a number of sources.

Government of Canada:

• Air Transportation Security

Federal Aviation Administration (FAA):

• FAA Policy Memorandum:  Certification of Strengthened Flightdeck Doors on Transport Category Airplanes (Revision 8), dated November 6, 2001, revised December 3, 2002

• FAA Policy Memorandum:  Interim Summary of Policy and Advisory Material Available for Use In the Certification of Airplane Cabin to Flight Deck Alerting Systems on Title 14 CRF Part 25 Aircraft, dated October 22, 2001, revised October 29, 2001

• FAA Policy Memorandum:  Interim Summary of Policy and Advisory Material Available for Use In the Certification of Cabin Mounted Video Cameras Systems with Flight Deck Displays on Title 14 CFR Part 25 Aircraft, dated October 5, 2001

• Final rule published in the U.S. Federal Register by the Federal Aviation Administration, 14 CFR Part 129, Docket No. FAA-2002-12504, titled "Security Considerations for the Flightdeck on Foreign Operated Transport Category Airplanes; Final Rule"

• Final rule (correction) published in the U.S. Federal Register by the Federal Aviation Administration, 14 CFR Part 129, Docket No. FAA-2002-12504, titled "Security Considerations for the Flightdeck on Foreign Operated Transport Category Airplanes; Final Rule - Correction"

• Report of the Secretary's Rapid Response Team on Aircraft Security titled "MEETING THE AIRCRAFT SECURITY CHALLENGE", dated October 1, 2001 

• The Federal Aviation Administration, Department of Transportation, Enhanced Airplane Security Program Internet Web Site

• The U.S. Department of Transportation, Recommendations from Airport and Aircraft Security Rapid Response Teams

• FAR Part 25: Airworthiness Standards, Transport Category Airplanes, Section 25.772 - Pilot Compartment Doors

• FAR Part 25: Airworthiness Standards, Transport Category Airplanes, Section 25.795 - Security Considerations

• FAR Part 121: Operating Requirements, Domestic, Flag and Supplemental Operations, Section 121.313 - Miscellaneous Equipment

• FAR Part 121: Operating Requirements, Domestic, Flag and Supplemental Operations, Section 121.547 - Admission to Flightdeck

• FAR Part 121: Operating Requirements, Domestic, Flag and Supplemental Operations, Section 121.581 - Observer's Seat: En Route Inspections

• FAR Part 121: Operating Requirements, Domestic, Flag and Supplemental Operations, Section 121.587 - Closing and Locking of the Flightcrew Compartment Door

• FAA Flight Standards Service, Operations Specifications MMELs Policy Letters web site at http://www.opspecs.com. The following final or draft policy letters are applicable:

• PL-09 (final), SUBJECT: Public Address System, Crewmember Interphone and Alerting Systems, Revision 5 dated October 15, 2001

• PL-24 (final), SUBJECT: Standard Proviso for Lavatory Fire Protection, Revision 3 dated October 15, 2001

• PL-83 (final), SUBJECT: Master Minimum Equipment List (MMEL) Requirements for Water and Waste on Air Carrier Aircraft, Revision 4 dated October 15, 2001

• PL-110 (final), SUBJECT: Supplemental Flight Deck Door Security Devices, Original dated May 24, 2002

• PL-112 (final), SUBJECT: MMEL/MEL Relief for 14 CFR Section 25.795 Compliant Cockpit Doors, Original dated June 28, 2002

Joint Aviation Authorities (JAA):

• JAA Policy Paper on Flightcrew Compartment Access Door Design and the associated Changes in Operational Procedures endorsed 20 November, 2001

Internet Information Sources:

• The Yale Law School, Avalon Project: September 11, 2001: Attack on America