{"id":"F2006B07705","name":"Airworthiness Directives 2004 - Revocation and Remaking - Air Induction Systems","slug":"airworthiness-directives-2004-revocation-and-remaking-air-induction-systems","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":50419,"registerId":"commonwealth-F2006B07705-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 - Air Induction Systems","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 Air Induction Systems\n\n AD Name AD Number\n\n Brackett Aircraft Specialities Air Inlet Filter Assembly Inspection AD/AIRIND/1\n\n Brackett Air Filter Gasket AD/AIRIND/2 Amdt 2\n\n \n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"This instrument does not change the substantive scope or requirements of the Airworthiness Directives it addresses. It revokes the listed ADs and re-makes them in exactly the same form as the latest published editions (see Note), so the legal effect is procedural (changing the form/issuance of the instruments) rather than substantive."},"complexity_factors":["Very short instrument with a single, narrow administrative purpose (revocation and re-making of listed ADs).","Explicit statutory authority cited (subregulation 39.001(1) of the Civil Aviation Safety Regulations 1998).","Scope limited to two specifically named Airworthiness Directives (listed in Schedule 1).","No substantive amendments to the content of the ADs (Note: re-made in exactly the same form), reducing interpretive complexity.","Requires attachment of the re-made instruments and simple record/filing steps, creating minor administrative steps but little legal ambiguity."],"plain_english_summary":"### What this instrument does\n\nThis instrument, signed by David Alan Villiers as a delegate of the Civil Aviation Safety Authority, uses the power in subregulation 39.001(1) of the Civil Aviation Safety Regulations 1998 to do two administrative things: it revokes the Airworthiness Directives listed in Schedule 1 and then re-makes each of those Directives as separate instruments attached to this instrument. The instrument states that each re-made Directive is in exactly the same form as the latest published edition of that Directive (see Note).\n\n### Who is affected\n\n- The instrument is directly about the specific Airworthiness Directives named in Schedule 1:  \n  - \"Brackett Aircraft Specialities Air Inlet Filter Assembly Inspection\" (AD/AIRIND/1)  \n  - \"Brackett Air Filter Gasket\" (AD/AIRIND/2 Amdt 2)\n\n- The text does not itself list particular persons or organisations (for example, aircraft owners, operators or maintenance organisations). It operates by revoking and re-making those named AD instruments, so any parties subject to those ADs will continue to be bound by the re-made instruments.\n\n### Why it matters (mechanics and immediate effects)\n\n- Mechanically, the instrument is an administrative re-issuance: it removes the earlier instruments listed in Schedule 1 and replaces each with a separately made instrument attached to this instrument (see main operative paragraphs and Schedule 1).  \n- The Note explicitly says the re-made Directives are identical in form to the latest published editions; therefore the instrument does not state any substantive change to the content of the ADs (see Note: \"Each attached Airworthiness Directive is being re-made in exactly the same form as appears in the latest published edition of the Directive.\").\n\n### Practical considerations, trade-offs and implementation points\n\n- Decision-maker: the act is taken by a CASA delegate under subregulation 39.001(1) of the Civil Aviation Safety Regulations 1998 (see first paragraph).  \n- Legal effect: the instrument changes the legal form of the listed ADs (revocation and separate re-making) but, according to the instrument's Note, does not change their substantive text.  \n- Compliance and administrative effects: the instrument does not specify changes to obligations, costs or compliance steps. Any administrative effects are therefore procedural (recordkeeping, citation or filing of separately made AD instruments) rather than substantive changes to the AD requirements, as far as this instrument states.  \n- Costs, incentives and risks: the instrument does not identify who bears costs or how compliance costs might change. Because the Note declares identical substance, there is no stated change to the operational requirements of the ADs in this instrument. Implementation risk is limited to administrative or publication tasks implicit in revoking and re-making instruments; the instrument does not identify implementation steps or timelines.\n\n### Source citations\n\n- Authority invoked: \"acting under subregulation 39.001 (1) of the Civil Aviation Safety Regulations 1998.\"  \n- Operative action: revokes the Airworthiness Directives mentioned in Schedule 1 and makes, as separate instruments, each Airworthiness Directive mentioned in Schedule 1 and attached.  \n- Schedule 1: lists the two ADs by name and number (AD/AIRIND/1 and AD/AIRIND/2 Amdt 2).  \n- Note: the re-made Directives are \"in exactly the same form as appears in the latest published edition of the Directive.\"  \n- Signature and date: David Villiers, 20 December 2004."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a straightforward administrative remaking of existing instruments. The note explicitly states each directive is being re-made 'in exactly the same form' as previously published. No expansion of scope or substance."},"complexity_factors":["Very short document (under 300 words)","Only 2 substantive items in Schedule 1","No defined terms section — relies on external knowledge of 'Airworthiness Directive' and 'Civil Aviation Safety Regulations 1998'","Simple binary structure: revocation + remaking","No conditional logic, exceptions, or cross-references beyond the parent regulation citation (subregulation 39.001(1))","Procedural/administrative nature rather than substantive regulatory content"],"plain_english_summary":"This is an official aviation safety instrument from December 2004 issued by David Villiers, acting on behalf of the Civil Aviation Safety Authority (CASA).\n\n**What it does:**\n- **Revokes** (cancels) two existing Airworthiness Directives (ADs) — these are mandatory safety instructions for aircraft maintenance\n- **Remakes** those same two directives as brand new, separate legal instruments\n\n**The specific safety rules affected:**\n- **AD/AIRIND/1** — Requires inspection of Brackett Aircraft Specialities air inlet filter assemblies (these are filters that clean air going into aircraft engines)\n- **AD/AIRIND/2 Amdt 2** — Addresses safety issues with gaskets (sealing rings) on Brackett air filters\n\n**Why it matters:**\nAirworthiness Directives are legally binding safety orders. When CASA revokes and remakes them, it's usually to ensure the directives sit on proper legal foundations or to update their administrative status. The note confirms the actual safety requirements aren't changing — they're being reissued in identical form.\n\n**Who it affects:**\n- Aircraft owners and operators using Brackett air filter systems\n- Licensed aircraft maintenance engineers\n- Aviation businesses responsible for compliance with CASA safety mandates"}},"importantCases":[],"_links":{"self":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-air-induction-systems","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-air-induction-systems/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-air-induction-systems/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-air-induction-systems/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-air-induction-systems/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-air-induction-systems/documents"}}