{"id":"F2006B07712","name":"Airworthiness Directives 2004 - Revocation and Remaking - Airship Industries Skyship Series Airships","slug":"airworthiness-directives-2004-revocation-and-remaking-airship-industries-skyship-series-airships","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":50440,"registerId":"commonwealth-F2006B07712-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 - Airship Industries Skyship Series Airships","content":"Airworthiness Directives 2004\n\nI, DAVID ALAN VILLIERS, delegate of the Civil Aviation Safety\n\nAuthority, acting under subregulation 39.001 (1) of the Civil\n\nAviation Safety Regulations 1998:\n\n(a) revoke the Airworthiness Directives mentioned in\n\nSchedule 1; and\n\n(b) make, as separate instruments, each Airworthiness\n\nDirective mentioned in Schedule 1 and attached.\n\n![](image.001.png)\n\nDavid Villiers\n\nDelegate of the Civil Aviation Safety Authority\n\n20 December 2004\n\nNote: Each attached Airworthiness Directive is being re-made in exactly the\n\nsame form as appears in the latest published edition of the Directive.\n\n  \nSchedule 1 Revocation and Remaking of\n\nAirworthiness Directives\n\nAirship Industries Skyship Series Airships\n\nAD Name AD Number\n\nPivot Box Rivets and Mounting AD/SKYSHIP/1\n\nElevator and Rudder Spring Tab Pivot Pins AD/SKYSHIP/2\n\nBallonet Air Valves AD/SKYSHIP/3\n\nT-Chest Gaiter AD/SKYSHIP/4\n\nEnvelope Delamination AD/SKYSHIP/5\n\nIgnition Control Units AD/SKYSHIP/6","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This instrument maintains the exact same scope as the original Airworthiness Directives. The note explicitly states each directive is being remade 'in exactly the same form as appears in the latest published edition.' This is purely a procedural remaking to ensure legal validity under current regulations, not an expansion of scope."},"complexity_factors":["Very short instrument (under 300 words)","Only 1 defined term implicitly used (subregulation reference)","No conditional logic or nested exceptions","Simple binary structure: revoke (a) and remake (b)","Schedule contains only a 6-row table with basic information","Single cross-reference to Civil Aviation Safety Regulations 1998","Administrative 'remaking' with explicit 'no change' note reducing interpretive burden"],"plain_english_summary":"This is a technical aviation safety instrument that **revokes and immediately remakes six specific safety rules** for a particular type of aircraft—the Airship Industries Skyship series (blimps/airships).\n\n**What it does:**\n- **Revokes** (cancels) six existing Airworthiness Directives (safety rules) for Skyship airships\n- **Remakes** those same six rules as brand new, separate legal instruments\n- The rules cover specific mechanical parts: pivot box rivets, elevator and rudder pins, air valves, protective gaiters, envelope delamination, and ignition units\n\n**Who it affects:**\n- Owners and operators of Airship Industries Skyship series airships\n- Maintenance engineers working on these aircraft\n- The Civil Aviation Safety Authority (CASA), which oversees aviation safety in Australia\n\n**Why it matters:**\nAirworthiness Directives are **legally binding safety orders**. They require aircraft owners to inspect, repair, or replace specific parts to prevent accidents. This instrument doesn't change the actual safety requirements—it's an administrative \"refresh\" to ensure the rules remain valid legal instruments under current regulations. The note confirms each directive is being remade in exactly the same form as before, so there's no change to what owners must actually do to their aircraft.\n\n**Key takeaway:** If you own a Skyship airship, your safety obligations haven't changed—but the legal paperwork has been updated."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The instrument does not change the substantive scope or technical content of the listed Airworthiness Directives. It revokes the previously-published ADs and re-makes them in exactly the same form (instrument note and Schedule 1), so the operative obligations on affected operators remain unchanged. The change is to legal/formal status and instrument structure rather than to substantive regulatory scope."},"complexity_factors":["Action is administrative (revocation and re-making) rather than technical amendment to requirements","Referential legal element: exercise of power under subregulation 39.001(1)","Multiple separate instruments involved (six ADs listed in Schedule 1) requiring stakeholders to track identifiers","Potential minor administrative burden for CASA and operators to update records and citations","Absence of the full text of the re-made ADs in this instrument (relies on latest published editions)"],"plain_english_summary":"What this instrument does (mechanics)\n\n- The delegate of the Civil Aviation Safety Authority (CASA) uses a statutory power (subregulation 39.001(1) of the Civil Aviation Safety Regulations 1998) to revoke a set of existing Airworthiness Directives (ADs) and to re-make each of those ADs as separate instruments (paragraphs (a) and (b) of the instrument). The revoked ADs and the titles/numbers of the re-made ADs are listed in Schedule 1 (see Schedule 1).\n\nWho is affected\n\n- Owners, operators, maintainers and certificated organisations responsible for Airship Industries Skyship series airships, because the listed ADs apply to those aircraft types (see Schedule 1).\n- CASA and its delegate, who make and publish airworthiness instruments under the cited regulation.\n\nOfficial rationale stated in the instrument\n\n- The instrument records that each attached AD is being re-made “in exactly the same form as appears in the latest published edition of the Directive.” That is the declared basis for the revocation-and-remaking step (note in instrument).\n\nTesting that rationale against costs, incentives and practical effects\n\n- Substantive change: The instrument does not change the technical content of the ADs, because it re-makes them in the same form as previously published. Therefore, the substantive compliance obligations on operators remain the same (instrument note and Schedule 1).\n\n- Who pays: Any costs of complying with the ADs (inspection, repair, parts, downtime) are borne by the operators and maintenance providers of the affected Skyship aircraft, as they remain subject to the same ADs (Schedule 1).\n\n- Administrative costs and legal formality: Although the ADs’ technical requirements are unchanged, there is an administrative effect: the previously-published ADs are formally revoked and re-made as separate instruments. That can create modest administrative costs for CASA (to re-issue and publish) and for operators who track instrument identifiers and legal status. The instrument itself does not quantify those costs (see paragraphs (a)–(b) and the note).\n\n- Incentives and behaviour: Because the AD content is unchanged, there is no new regulatory incentive to change engineering or commercial behaviour beyond the pre-existing ADs. The remaking step may change how the ADs are sourced, cited or indexed (different instrument identifiers listed in Schedule 1), which can affect record-keeping and legal citation practices.\n\n- Discretion and legal authority: The action is taken under an express statutory power (subregulation 39.001(1)). The delegate exercises that power to revoke and re-make instruments; the text does not add new decision-making discretion about AD content (see subregulation reference and instrument paragraphs).\n\n- Implementation risk and clarity: Because the re-made ADs are identical in substance to the latest published versions, the risk of substantive confusion is low. A practical risk is administrative: stakeholders must ensure they are referring to the correct instrument identifiers after the change (Schedule 1).\n\nConcrete mechanics and list of affected ADs\n\n- The Schedule lists six Airworthiness Directives by name and AD number that are revoked and re-made in the same form: Pivot Box Rivets and Mounting (AD/SKYSHIP/1); Elevator and Rudder Spring Tab Pivot Pins (AD/SKYSHIP/2); Ballonet Air Valves (AD/SKYSHIP/3); T-Chest Gaiter (AD/SKYSHIP/4); Envelope Delamination (AD/SKYSHIP/5); Ignition Control Units (AD/SKYSHIP/6) (see Schedule 1).\n\nSummary statement\n\n- The instrument is an administrative action by the CASA delegate that revokes and re-issues six Skyship-series airworthiness directives in identical form. It does not change the technical obligations on operators, but it does change the formal legal status and identifiers of the ADs, with modest administrative effects for regulators and affected operators (see subregulation 39.001(1), paragraphs (a)–(b), Schedule 1, and the instrument note)."}},"importantCases":[],"_links":{"self":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-airship-industries-skyship-series-airships","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-airship-industries-skyship-series-airships/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-airship-industries-skyship-series-airships/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-airship-industries-skyship-series-airships/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-airship-industries-skyship-series-airships/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-airship-industries-skyship-series-airships/documents"}}