{"id":"F2006B08055","name":"Airworthiness Directives 2004 - Revocation and Remaking - Weatherly 620 Series Aeroplanes","slug":"airworthiness-directives-2004-revocation-and-remaking-weatherly-620-series-aeroplanes","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115139,"registerId":"commonwealth-F2006B08055-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"Airworthiness Directives 2004 - Revocation and Remaking - Weatherly 620 Series Aeroplanes","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 20.2\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\n Airworthiness Directives 2004\n\n I, DAVID ALAN VILLIERS, delegate of the Civil Aviation Safety\n\n Authority, acting under subregulation 39.001 (1) of the Civil\n\n Aviation Safety Regulations 1998:\n\n (a) revoke the Airworthiness Directives mentioned in\n\n Schedule 1; and\n\n (b) make, as separate instruments, each Airworthiness\n\n Directive mentioned in Schedule 1 and attached.\n\n \n\n ![](image.001.png)\n\n David Villiers\n\n Delegate of the Civil Aviation Safety Authority\n\n \n\n  20 December 2004\n\n Note:   Each attached Airworthiness Directive is being re-made in exactly the\n\n same form as appears in the latest published edition of the Directive.\n\n \n\n\n Schedule 1 Revocation and Remaking of\n\n Airworthiness Directives\n\n Weatherly 620 Series Aeroplanes\n\n AD Name AD Number\n\n Wing Fatigue Life Limitation AD/W620/1 Amdt 1\n\n Wing Hinge Pins AD/W620/2\n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The instrument explicitly states it is remaking the directives 'in exactly the same form' as previously published. This is purely administrative housekeeping to ensure legal continuity under the Civil Aviation Safety Regulations 1998 framework, with no expansion of substantive safety requirements."},"complexity_factors":["Extremely short instrument (under 300 words)","Only 2 defined terms implicitly referenced (the AD numbers themselves)","No cross-references to other legislation beyond the enabling regulation (subregulation 39.001(1))","No conditional logic, exceptions, or nested provisions","Simple binary structure: (a) revoke, (b) remake","Substantive content contained in attached schedules rather than the instrument itself"],"plain_english_summary":"This is a technical aviation safety instrument that **revokes and immediately remakes two specific airworthiness directives** for a particular type of aircraft—the Weatherly 620 series aeroplanes.\n\n**What it does:**\n- **Revokes** (cancels) two existing safety rules:\n  - **AD/W620/1 Amdt 1** — sets fatigue life limits for the aircraft's wings (how many flight hours before the wings must be inspected or retired due to metal fatigue)\n  - **AD/W620/2** — concerns safety requirements for wing hinge pins (critical components that attach the wings to the fuselage)\n- **Remakes** these same rules as fresh, standalone legal instruments in identical form\n\n**Who it affects:**\n- Owners and operators of Weatherly 620 series aeroplanes (agricultural aircraft used for crop dusting and aerial work)\n- Maintenance engineers and organisations servicing these aircraft\n- The Civil Aviation Safety Authority (CASA), which enforces these rules\n\n**Why it matters:**\nAirworthiness directives are **legally binding safety orders**. They exist because design flaws, wear patterns, or incidents have revealed potential catastrophic failures. Non-compliance grounds an aircraft—meaning it cannot legally fly. This instrument ensures these critical safety requirements remain in force under current regulatory frameworks, even as the underlying legal instrument is refreshed. The \"revoke and remake\" mechanism is a common administrative technique to ensure continuity of safety obligations while updating the legal basis of the instrument."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The instrument does not change the substantive scope or requirements of the listed Airworthiness Directives. It revokes the previously published instruments and re-issues the same AD texts as separate attached instruments, explicitly stating they are re-made \"in exactly the same form as appears in the latest published edition of the Directive.\" (See Note and Schedule 1.)"},"complexity_factors":["Short, self-contained instrument with a single administrative purpose (revocation and re-making).","Direct statutory authority cited (subregulation 39.001(1)) but no complex cross-references to substantive regulatory requirements.","Only two specific ADs listed in Schedule 1, identified by title and AD number.","No change in substantive content (Note: re-made in exactly the same form), reducing interpretive complexity.","Administrative detail (attachments and separate instruments) may require record-keeping but involves limited legal analysis."],"plain_english_summary":"This instrument revokes certain Airworthiness Directives for Weatherly 620 series aeroplanes and re-issues each as a separate instrument attached to the document. It was made by a CASA delegate under subregulation 39.001(1) and dated 20 December 2004.\n\nPractically, the change is administrative: the AD texts are re-made \"in exactly the same form\" as published, so owners, operators and maintainers keep the same legal obligations under the newly issued ADs."}},"importantCases":[],"_links":{"self":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-weatherly-620-series-aeroplanes","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-weatherly-620-series-aeroplanes/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-weatherly-620-series-aeroplanes/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-weatherly-620-series-aeroplanes/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-weatherly-620-series-aeroplanes/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-weatherly-620-series-aeroplanes/documents"}}