Airworthiness Directives

3.1 General

It is policy that the embodiment of Airworthiness Directives (AD) shall be consistent across all Overseas Territories. Therefore any AD required to be embodied in one Territory shall be applicable in all Territories. This will be achieved, where necessary, via co-ordination through ASSI.

3.2 State of Type Certification ADs

The issue of an Airworthiness Directive (AD) by the State of Type Certification listed on the TAC will be automatically adopted by the OTAAs without any further investigation. Operators and owners of aircraft shall therefore comply directly with the requirements of the AD.

3.3 State of Type design ADs

State of Type Design AD’s will normally also simply be adopted by the State of Type Certification. The OTAAs will therefore also automatically adopt these ADs.

3.4 Mandatory Airworthiness action in absence of a published AD

3.4.1 If an OTAA concludes that mandatory airworthiness action is necessary to address the findings of an investigation into an occurrence, incident or accident it will encourage the State of Type Design and/or the State of Type Certification to work with the Type Certificate Holder and introduce the required AD. Assuming the satisfactory issue of an AD no further OTAA action would be necessary. The AD would be adopted within the Territories as per paragraphs 3.2 and 3.3 above.

3.4.2 If mandatory AD action is considered necessary by an OTAA and the State of Design and/or State of Certification does not agree, the OTAA will raise the matter with ASSI for further review and action. ASSI will review the details of the investigation and if agreed will petition the State of Design/Certification NAA again for a satisfactory resolution or, if unsuccessful, will initiate mandatory AD action for compliance by all Overseas Territories; i.e. not just the single OTAA in question; therefore the ASSI Airworthiness Directive will be promulgated to all OTAA’s for onward distribution to Operators and aircraft owners.


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