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New Mode S Transition Arrangements for State Aircraft

In July 2004 the regulatory authorities of the Mode S implementing States agreed to extend the transition arrangements for Elementary and Enhanced Surveillance compliance by State aircraft. During the revised transition period, a coordinated exemption policy will be applied for State Aircraft conditional on the adoption of specific measures supporting the monitoring of the Mode S compliance status of State Aircraft.

The harmonised transition arrangements and States' involvement in the supporting process and procedures were agreed at CMIC/21.

The full set of civil and military Mode S transition arrangements are agreed by the Provisional Council under silent procedure (10 Jan 05).

Harmonised Transition Arrangements for State Aircraft

Geographical area - where will Mode S be implemented?

Civil ATC authorities have commenced their implementation of Mode S Elementary Surveillance in the airspace of Belgium, France, Germany, Luxembourg, The Netherlands and Switserland.
Mode S Enhanced Surveillance will be implemented from 2005 onwards, initially in the airspace of France, Germany and the United Kingdom.

Mode S Elementary Surveillance (ELS) - IFR & VFR airborne implementation

For all State Aircraft flying in Mode S designated airspace, the final date for compliance for the carriage and operation of Mode S Elementary Surveillance airborne equipment is 31 March 2009.

Mode S Enhanced Surveillance (EHS)

The carriage and operation of Mode S Enhanced Surveillance functionality applies to "transport type" State aircraft with a maximum take-off mass in excess of 5700 kg or a maximum true cruising airspeed in excess of 250 kts and a "full" DAP capability, conducting IFR flights as GAT in Mode S Enhanced designated airspace for more than 30 hours per annum per airframe.

The final date for compliance for the carriage and operation of Mode S Enhanced Surveillance airborne equipment is 31 March 2009.

Supporting measures

A number of supporting measures were agreed allowing the regulatory authorities of the implementing States to monitor the Mode S compliance status and exemptions granted to State Aircraft Operators.

Operators of State Aircraft of EUROCONTROL Member States will be requested through the Civil-Military Standing Interface Committee (CMIC) to submit Mode S airborne equipage plans for ELS and EHS.

  Acrobat Mode S Transition Arrangements for State Aircraft Mode S - Harmonisation of the Transition Arrangements for State Aircraft - Process and Procedures for the Managing of the Mode S Compliance Status and the Exemptions Granted to State Aircraft.
Edition 1.1 dd. 22 Aug 2005 with updated Annex A.

  Mode S website
Marc DE CAT
Expert  - DSS/CM/CNS
Email: 
Phone :  +32.2.729.3405
 
  Last validation: 29/06/2011