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 Mode S and ACAS Programme
 ACAS
 Mode S
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Information Papers

Here you will find detailed information concerning aspects of Mode S airborne equipment for ELS and EHS, requirements for new build aircraft, assessment of aircraft capability and Mode S Interrogator Codes.

Mode S Enhanced Surveillance (EHS) Requirements for New Build Aircraft

This paper details the modified conditions for EHS retrofits for aircraft with a first CoA issued on or after 31 March 2005.

Acrobat EN
Date: 06/06/2008 Edition: 1.0

Mode S Enhanced Surveillance – Assessment of Aircraft Capability

This paper describes criteria that may be used to decide whether an individual DAP is considered to be available and whether the aircraft in question is required to be upgraded to an EHS compliant status. It also provides definitions of various terms used within the Mode S documentation.

Acrobat EN
Date: 16/05/2005 Edition: Not Given

Mode S Elementary Surveillance (ELS) Requirements for New Build Aircraft

This paper details the modified conditions for ELS retrofits for aircraft with a first CoA issued prior to 31 March 2004 for IFR/GAT flights, and, prior to 31 March 2005 for VFR flights.

Removed as the exemption period has now expired.


Rationalisation of the Transition Periods for the Operational Introduction of Mode S Elementary and Enhanced Surveillance

This paper details a rationalisation of the Mode S Elementary Surveillance (ELS) and Mode S Enhanced Surveillance (EHS) transition periods for aircraft conducting IFR/GAT flights.

Acrobat EN
Date: 11/01/2005 Edition: 3.0

The Co-ordination of Mode S Interrogator Codes in Europe

The purpose of this information notice is to highlight to both civil and military Mode S operators, operating in or close to Europe, the critical need to co-ordinate the use of Mode S Interrogator Codes.

Acrobat EN
Date: 01/03/2005 Edition: Not Given
 
  Last validation: 05/08/2008