{"id":"F2006B07775","name":"Airworthiness Directives 2004 - Revocation and Remaking - Brantly B-2 Series Helicopters","slug":"airworthiness-directives-2004-revocation-and-remaking-brantly-b-2-series-helicopters","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":50562,"registerId":"commonwealth-F2006B07775-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 - Brantly B-2 Series Helicopters","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\nBrantly B-2 Series Helicopters\n\nAD Name AD Number\n\nTail Rotor Guard and Skid Assembly P/N B2-416 - Modification AD/B-2/1\n\nTail Rotor Drive - Modification AD/B-2/2\n\nTail Rotor Drive - Inspection AD/B-2/3\n\nTail Rotor Drive - Modification AD/B-2/4\n\nTail Cone Reinforcement AD/B-2/5\n\nOverunning Clutch - Modification and Cockpit Placard Amendment AD/B-2/6\n\nMain Rotor Blade Dampers - Installation AD/B-2/7\n\nTail Cone Reinforcement AD/B-2/8\n\nMain Transmission Mount - Reinforcement AD/B-2/9\n\nRotor Blade Hinge - Modification AD/B-2/10\n\nTail Rotor Blade Retaining Nut - Safetying AD/B-2/11\n\nMain Transmission Forward Mount - Rework AD/B-2/12\n\nTail Rotor Guard - Inspection AD/B-2/13\n\nRod End Bearings (Old Type KAHR. HE3SFN) on Forward End of U/C Drag AD/B-2/14\n\nSuperseded by AD/B-2/23 AD/B-2/15\n\nCentrifugal Clutch - Inspection Cockpit Placard - Installation AD/B-2/16\n\nElimination of Carburettor Manifold From Oil System AD/B-2/17\n\nSeat Safety Bracket - Installation AD/B-2/18\n\nTransmission Mount Lugs - Reinforcement AD/B-2/19\n\nIncreased Tail Rotor Control - Modification AD/B-2/20\n\nConversion of Fuel Pump Model RD 7790D3 and E to G AD/B-2/21\n\nSeat Back Adjustment Wire - Removal AD/B-2/22\n\nMain Rotor Blades - Inspection and Replacement AD/B-2/23\n\nRudder Control Post Upper Attachment - Modification AD/B-2/24\n\nTail Rotor Blade - Inspection AD/B-2/25\n\nMain Rotor Mast Upper Bearing - Replacement AD/B-2/26\n\nTail Rotor Blades Strike Indicators - Installation AD/B-2/27\n\nTail Rotor Blade Spar - Inspection AD/B-2/28 Amdt 1\n\nTail Rotor Drive Shaft - Inspection and Corrosion Proofing AD/B-2/29 Amdt 1\n\n  \nRetirement Life - Critical Components AD/B-2/30 Amdt 3\n\nMain Rotor Mast - Inspection AD/B-2/31","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"This instrument does not change the substantive scope of regulatory obligations. It revokes previously issued AD instruments and re-issues each AD in the same form as the latest published edition. The purpose is administrative housekeeping (separate, standalone instruments), so obligations on owners, operators and maintenance organisations remain materially unchanged. Any change is procedural (citation and instrument reference), not substantive."},"complexity_factors":["Short, single-purpose instrument (administrative revocation and re-issue).","One statutory source of authority cited (subregulation 39.001(1)).","Schedule listing ~31 specific ADs (length comes from the list rather than embedded legal complexity).","No new defined terms or layered conditional logic in the body of the instrument.","Attachments implied (re-made ADs) increase practical review work but are stated to be identical to prior published editions."],"plain_english_summary":"**What this instrument does, in plain English**\n\n- It cancels (revokes) a set of existing Airworthiness Directives (ADs) that apply to Brantly B-2 series helicopters, and then re-issues each of those ADs as its own separate legal instrument.\n- The revocation and re-issuing is done by a delegate of the Civil Aviation Safety Authority (CASA) under subregulation 39.001(1) of the Civil Aviation Safety Regulations 1998. The instrument lists the affected ADs in Schedule 1 and states that each re-issued AD appears in the same form as the latest published edition.\n\n**Who is affected**\n\n- Owners and operators of Brantly B-2 series helicopters (they must continue to follow the ADs listed).\n- Maintenance organisations and engineers who perform inspections, modifications or repairs required by those ADs.\n- CASA and its delegate (who take on the administrative task of revoking and re-issuing the ADs).\n\n**Why it matters (mechanics, not opinion)**\n\n- Airworthiness Directives are mandatory safety requirements. Changing the legal instrument that contains an AD can affect how the obligation is recorded, cited, and enforced even when the technical requirement remains the same.\n- This instrument does not change the technical content of the listed ADs: it revokes prior instruments and re-makes them “in exactly the same form” (per the instrument’s Note). The legal effect is therefore administrative: it replaces old instruments with freshly issued ones that are standalone.\n\n**Official rationale (as stated) and an implementation-focused assessment**\n\n- Stated rationale: administrative housekeeping — revoking old ADs and re-issuing each as separate instruments in their latest published form.\n- Implementation costs and burdens: operators and maintainers are likely to need to update compliance records, maintenance manuals, and internal procedures to cite the new instrument references. These are paperwork and administrative costs rather than new technical compliance costs.\n- Who pays: CASA bears the administrative cost of re-issuing; aircraft owners/operators bear the modest administrative cost of updating records and references. No new technical work (inspections/modifications) is created by this instrument because the AD content remains the same.\n- Incentives and behaviour change: Because the substantive obligations are unchanged, behaviour required of pilots, owners and maintenance organisations remains the same. The main behavioural effect is administrative: responsible persons must ensure they reference and rely on the re-made ADs going forward.\n- Implementation risk: If the re-made ADs (attachments) are not correctly published or communicated, there is a risk of temporary uncertainty about which instrument is enforceable. That could create gaps or disputes over compliance until records are aligned.\n- Bureaucratic discretion: The delegate acts under statutory power (subregulation 39.001(1)) to make or revoke ADs. The instrument is framed as carrying out that power; because the ADs are re-made in the same form, there is limited substantive discretion in the content here.\n\n**Effects on private enterprise and markets**\n\n- Competition, prices and productivity: No direct effect. The instrument does not alter production or operational requirements for operators beyond administrative updates to compliance documentation.\n- Concentrated benefits and diffuse costs: Benefits (clearer legal instruments, consolidated ADs) are diffuse—easier reference for regulators and operators. Costs are also diffuse (administrative time for many small operators). There is no evident concentrated private gain or new regulatory privilege created by this instrument.\n\n**Key legal references in the instrument**\n\n- Authority used: subregulation 39.001(1) of the Civil Aviation Safety Regulations 1998.\n- The list of ADs being revoked and re-made appears in Schedule 1 (a list of about 31 ADs affecting various tail, rotor, transmission and other components of the Brantly B-2)."},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"The legislation maintains its original scope. This is a procedural remaking of existing safety directives without expansion of subject matter or affected parties."},"complexity_factors":["Single operative provision with two clear actions (revocation and remaking)","No defined terms section — relies on external understanding of 'Airworthiness Directive'","Schedule 1 is a simple table listing 31 ADs by name and number","Cross-reference to Civil Aviation Safety Regulations 1998 (subregulation 39.001(1)) but no complex statutory interpretation required","Note clarifies that content remains unchanged — no conditional logic or exceptions","Extremely short — approximately 300 words of substantive text"],"plain_english_summary":"This CASA order cancels 31 existing Airworthiness Directives for Brantly B‑2 helicopters and reissues each one as a separate, standalone legal instrument. The content of the ADs is unchanged — this is a legal housekeeping step to restate mandatory safety rules individually. It affects Brantly B‑2 owners, operators, and maintenance personnel who must continue to comply with the same safety requirements."},"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"}},"importantCases":[],"_links":{"self":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-brantly-b-2-series-helicopters","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-brantly-b-2-series-helicopters/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-brantly-b-2-series-helicopters/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-brantly-b-2-series-helicopters/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-brantly-b-2-series-helicopters/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-brantly-b-2-series-helicopters/documents"}}