Guidance and Reference

  • Guidance on Amendment 48 to Annex 6, Part I Autonomous Distress Tracking Equipage Requirements

This page provides guidance on Amendment 48 to Annex 6, Part I, which established a revised applicability date for the equipage of the autonomous distress tracking capability described in paragraph 6.18 – Location of an aeroplane in distress.  The revised text, adopted in July 2022, now reads:


6.18.1 As of 1 January 2025, all aeroplanes of a maximum certificated take-off mass of over 27 000 kg for which the individual certificate of airworthiness is first issued on or after 1 January 2024, shall autonomously transmit information from which a position can be determined by the operator at least once every minute, when in distress, in accordance with Appendix 9.

 

    • Complying with the revised Standard

 A system which meets the requirements of the Standard is typically referred to as an autonomous distress tracking system or ADT system.


Affected aeroplanes must have an ADT system installed no later than 1 January 2025. It should also be noted that the intent of the Standard is that once installed, the ADT system should be operational and in use.  It is not intended that the system should be installed on the aircraft but not become operational until 1 January 2025.


    • Affected aircraft

Equipage Standards in Annex 6 that are intended to apply on a future date often take one of two forms – affect all new aircraft of an existing type, or affect only for new aircraft types. Which aircraft are affected is described in one of two forms in the Annex as explained below:

 

Text used in the Standard Explanation

…the individual certificate of

airworthiness is first issued on or after…

The Standard affects all newly produced aircraft of an existing type. The first issuance of a CofA indicates that the regulatory responsibility for meeting continuing airworthiness requirements has moved from the State of Manufacture to State of Registry.
…the application for type certification is submitted to a Contracting State on or after…
The Standard will only affect new aircraft types where the initial application for type certification comes after the embedded date. No existing aircraft types will be affected by this Standard.

 

    • Export Certificate of Airworthiness

Most States of Design/Manufacture facilitate the transfer of aircraft onto the registry of another State by the issue of an "Export Certificate of Airworthiness" or similarly titled document.  While an Export Certificate of Airworthiness (CofA) is not valid for the purpose of flight, such a document provides confirmation by the exporting State of a recent satisfactory review of the airworthiness status of the aircraft.  The Export CofA confirms the aircraft's conformity with the approved type design and its acceptable airworthiness status, stating in effect that if the aircraft were to remain on the aircraft register of the exporting State it would continue to qualify for the continuance of its CofA. While some States may not have either the provision for export certification or any requirement for such certificates from States from which they receive exported aircraft, most States of Design/Manufacture issue an Export CofA prior to the delivery of a newly manufactured aircraft to the importing State. If there is an agreement, through bilateral agreements or other means, the Export CofA also attests compliance with the requirements of the importing State.


The issuance of an Export CofA also confers the transfer of the regulatory responsibility for meeting continuing airworthiness requirements for a specific aeroplane from the exporting State to the importing State. Many exporting States also issue a formal confirmation that the aeroplane has been deregistered from that State.[1]


As mentioned above, ADT equipage requirements are determined based upon the date that an aeroplane is first issued a CofA. In respect of newly manufactured aeroplanes and the transferal of the aeroplane from the exporting State (State of Design/Manufacture) to the importing State (State of Registry), there are some variations in how the first CofA is issued. When issued, an Export CofA may constitute the first issuance of a CofA. The following examples outline the practices that are typically used by States of Design/Manufacture, particularly when exporting aeroplanes, and provide practical implementation guidance in respect of the ADT equipage requirements.


While an Export CofA confirms an aircraft's conformity with the approved type design and its acceptable airworthiness status, an Export CofA in itself does not grant the right of international flight and cannot be validated in accordance with Annex 8, Part II, 3.2.4. To be eligible for international flight, an aircraft having an Export CofA should carry a valid Article 31 compliant Certificate of Airworthiness issued by the State of Registry, or some equivalent document mutually acceptable to the exporting and importing States, as well as any State over which the aircraft will fly on its delivery flight.


The autonomous distress tracking provisions are intended for newly manufactured aeroplanes involved in international commercial operations.  Practical examples are given below that illustrate when equipage would be required.

 

  State of Design/Manufacture Importing State/State of Registry ADT Equipage Requirement
Scenario 1

The State of Design/Manufacture (i.e., exporting State) issues an Article 31 compliant CofA or an Export CofA for a newly manufactured aeroplane prior to 1 January 2024.

 

The importing State (State of Registry) does not issue a Certificate of Airworthiness that conforms with Article 31 of the Conventional on International Civil Aviation prior to delivery of the airplane to importing State's air operator. Not Required to be ADT Equipped
Scenario 2 The State of Design/Manufacture (i.e., exporting State) issues an Article 31 compliant CofA or an Export CofA for a newly manufactured aeroplane prior to 1 January 2024.

The importing State sends its Civil Aviation Authority (Airworthiness Inspection Division) to the exporting State to confirm that the aeroplane meets its States airworthiness requirements, and upon confirmation, the importing State issues its own Article 31 compliant Certificate of Airworthiness prior to the delivery flight.

 

Not Required to be ADT Equipped


 

Scenario 3

The State of Design/Manufacture (i.e., exporting State) issues an Article 31 compliant CofA or an Export CofA for a newly manufactured aeroplane prior to 1 January 2024.

 

The importing State sends a signed, but not dated, Certificate of Airworthiness to the State of Design/Manufacture. The Article 31 compliant CofA is subsequently dated when the exporting State Authority has confirmed that the aeroplane meets the airworthiness requirements of the importing State.  This process requires that the importing State and exporting State have in place an agreement that permits this approach.

 

Not Required to be ADT Equipped
Scenario 4

The State of Design/Manufacture (i.e., exporting State) issues an Article 31 compliant CofA or an Export CofA for a newly manufactured aeroplane prior to 1 January 2024.

 

In accordance with an existing agreement between the concerned States, the importing State (State of Registry) permits the exporting State to deliver the Article 31 compliant CofA on its behalf.

 

Not Required to be ADT Equipped
Scenario 5

The State of Design/Manufacture (i.e., exporting State) issues an Article 31 compliant CofA or an Export CofA for a newly manufactured aeroplane prior to 1 January 2024.

 

Date of first issuance of the Article 31 compliant CofA by the importing State on or after 1 January 2024 Not Required to be ADT Equipped
Scenario 6

The State of Design/Manufacture (i.e., exporting State) does not issue an Export CofA, nor is there an Article 31 compliant CofA available prior to the delivery flight of the aeroplane to the importing State.

 

Date of first issuance of the Article 31 compliant CofA by the importing State prior to 1 January 2024.

 

 

Not Required to be ADT Equipped


 

Scenario 7 The State of Design/Manufacture (i.e., exporting State) does not issue an Export CofA, nor is there an Article 31 compliant CofA available prior to the delivery flight of the aeroplane to the importing State.Date of first issuance of the Article 31 compliant CofA by the importing State on or after 1 January 2024.

 

 

Aeroplane is required to be equipped by 1 January 2025, and start transmitting in accordance with ADT requirement as soon as aeroplane is equipped.

 

Scenario 8

The State of Design/Manufacture (i.e., exporting State) issues an Article 31 compliant CofA or an Export CofA for a newly manufactured aeroplane on or after 1 January 2024.

 

Date of first issuance of the Article 31 compliant CofA by the importing State on or after 1 January 2024.

 

Aeroplane is required to be equipped by 1 January 2025, and start transmitting in accordance with ADT requirement as soon as aeroplane is equipped.

 

Scenario 9

The State of Design/Manufacture (i.e., exporting State) issues an Article 31 compliant CofA or an Export CofA for a newly manufactured aeroplane on or after 1 January 2024.

 

In accordance with an existing agreement between the concerned States, the importing State (State of Registry) permits the exporting State to deliver the Article 31 compliant CofA on its behalf.

 

Aeroplane is required to be equipped by 1 January 2025, and start transmitting in accordance with ADT requirement as soon as aeroplane is equipped.

 

 

The above-mentioned examples are intended to provide guidance to States on the implementation of Amendment 48 to Annex 6, Part I. States are urged to implement Amendment 48 to Annex 6, Part I, within their national regulatory frameworks as soon as practicable to facilitate the highest level of uniformity in accordance with the Convention on International Civil Aviation. States are also urged to notify ICAO of any differences in respect of Amendment 48 to Annex 6, Part I.  States should also consider the use of the Electronic Filing of Differences (EFOD) System for notification of differences.



[1] As of 2 November 2023, if a Contracting State or common mark registering authority issues a certificate of deregistration, it shall issue the certificate in accordance with Section 9 of Annex 7.


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