{"id":"F2006B07713","name":"Airworthiness Directives 2004 - Revocation and Remaking - Airtractor 600 Series Aeroplanes","slug":"airworthiness-directives-2004-revocation-and-remaking-airtractor-600-series-aeroplanes","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":50444,"registerId":"commonwealth-F2006B07713-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"Airworthiness Directives 2004 - Revocation and Remaking - Airtractor 600 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 Airtractor 600 Series Aeroplanes\n\n AD Name AD Number\n\n Airframe Life Limits AD/AT 600/1\n\n Aft Fuselage Structure Upper Longeron AD/AT 600/2 Amdt 1\n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This instrument performs a purely administrative function — revoking and remaking existing Airworthiness Directives in identical form. The scope remains exactly as originally intended: maintaining airworthiness requirements for Airtractor 600 series aircraft. There is no expansion of regulatory scope or substantive change to the safety requirements."},"complexity_factors":["Very short document — only 2 substantive paragraphs of operative text plus a schedule table","Only 2 defined items in Schedule 1 (the two Airworthiness Directives being remade)","No nested conditional logic or exceptions — straightforward 'revoke and remake' structure","No cross-references to other legislation beyond the single citation of Civil Aviation Safety Regulations 1998, subregulation 39.001(1)","The substantive safety requirements are contained in attached documents not reproduced in this instrument itself"],"plain_english_summary":"This is a technical aviation safety instrument issued by the Civil Aviation Safety Authority (CASA) in December 2004. It does two things:\n\n**What it does:**\n- **Revokes** (cancels) two existing Airworthiness Directives for Airtractor 600 series aeroplanes — these are official safety orders that tell aircraft owners what repairs or inspections they must carry out\n- **Remakes** those same directives as new, separate legal instruments, keeping them exactly as they were before\n\n**Who it affects:**\n- Owners and operators of Airtractor 600 series aeroplanes (these are agricultural aircraft used for crop dusting and firefighting)\n- Maintenance engineers who work on these planes\n\n**Why it matters:**\nAirworthiness Directives are legally binding safety instructions. If you don't comply, you can't fly the aircraft. This instrument is essentially a housekeeping exercise — CASA is tidying up how these safety rules are structured legally, without changing the actual safety requirements. The two directives being remade cover:\n- **AD/AT 600/1**: Limits on how long the airframe (the plane's body) can be used before it must be retired or heavily inspected\n- **AD/AT 600/2 Amdt 1**: Inspection requirements for a specific structural part — the upper longeron (a major support beam) at the back of the fuselage\n\nThis ensures these critical safety rules remain legally enforceable while being properly formatted as standalone instruments."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The instrument does not change the substantive scope of the listed Airworthiness Directives. It revokes those ADs and re-issues them as separate instruments in exactly the same form as their latest published editions (source: instrument note and Schedule 1). The action is administrative and preserves existing requirements rather than altering them."},"complexity_factors":["Procedural nature: the instrument performs administrative revocation and re-issuance rather than creating new substantive requirements (source: instrument note).","Reference to delegated power: action taken under subregulation 39.001(1) (source: instrument header).","Attachment requirement: the re-made ADs must be attached and match the latest published editions (source: instrument note and Schedule 1).","Small, narrowly defined scope: only two ADs for Airtractor 600 series are listed (source: Schedule 1).","Low potential for substantive legal change reduces interpretive complexity, but accuracy/clerical risk remains (inherent in re-making identical texts)."],"plain_english_summary":"This instrument is an administrative action by a CASA delegate that formally revokes two Airtractor 600‑series Airworthiness Directives and re‑issues them as separate attached instruments in the identical text of their latest published editions. It changes the legal form and record‑keeping of those ADs without altering substantive obligations for operators, but does impose administrative work and a small accuracy risk for CASA in ensuring the re‑made attachments exactly match the published ADs."}},"importantCases":[],"_links":{"self":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-airtractor-600-series-aeroplanes","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-airtractor-600-series-aeroplanes/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-airtractor-600-series-aeroplanes/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-airtractor-600-series-aeroplanes/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-airtractor-600-series-aeroplanes/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-airtractor-600-series-aeroplanes/documents"}}