{"id":"F2006B07858","name":"Airworthiness Directives 2004 - Revocation and Remaking - Eurocopter BO 105 Series Helicopters","slug":"airworthiness-directives-2004-revocation-and-remaking-eurocopter-bo-105-series-helicopters","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":50824,"registerId":"commonwealth-F2006B07858-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 - Eurocopter BO 105 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\nEurocopter BO 105 Series Helicopters\n\nAD Name AD Number\n\nTandem Hydraulic Units - Water in Servo Valve AD/BO 105/1\n\nTail Rotor Blade Grips AD/BO 105/2 Amdt 1\n\nTail Rotor Gearbox Attachment AD/BO 105/3\n\nDual Flight Controls AD/BO 105/4\n\nTandem Hydraulic Units - Piston Rods AD/BO 105/5\n\nFuel Filter Drain Valve AD/BO 105/6\n\nFatigue Life Limitations AD/BO 105/7 Amdt 1\n\nTail Boom Skin AD/BO 105/8\n\nMain Rotor Blade Grip Bolts AD/BO 105/9\n\nSwashplate AD/BO 105/10\n\nTail Rotor Transmission AD/BO 105/11 Amdt 1\n\nRotating Control Rod End Bearings AD/BO 105/12\n\nLoad Hook System AD/BO 105/13\n\nDual Hydraulic System Switch Over AD/BO 105/14\n\nTransmission Flange Shimming AD/BO 105/15","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. It is purely a legal reformatting exercise to transition existing safety requirements into the new CASR 1998 framework. The Note explicitly confirms the Directives are being re-made 'in exactly the same form' — no expansion of scope, no new requirements, no additional aircraft types or components added."},"complexity_factors":["Very short document (approximately 300 words)","Only 1 defined term implicitly used (subregulation 39.001(1) - the legal power source)","No conditional logic or nested exceptions","Simple binary structure: revoke old rules, make new identical rules","Schedule 1 is a straightforward table listing 15 items by name and number","No cross-references to other legislation beyond the enabling regulation","Administrative in nature rather than substantive - no new technical requirements introduced"],"plain_english_summary":"This CASA safety order revokes and immediately remakes 15 Airworthiness Directives for Eurocopter BO 105 helicopters. It affects owners, operators, maintenance engineers and anyone responsible for airworthiness.\n\nThe action is administrative: the Directives are reissued unchanged to preserve their legal force under current regulations, so mandatory inspections, repairs and life limits remain in effect but are restated as separate, enforceable instruments."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"No substantive scope change. The instrument revokes the listed Eurocopter BO 105 Airworthiness Directives and re-issues them in the same form as the latest published editions (see Note and Schedule 1), converting them into separate instruments without altering their technical requirements."},"complexity_factors":["Legal authority and procedural formality: instrument is made by a CASA delegate under subregulation 39.001(1) of the Civil Aviation Safety Regulations 1998 (preamble).","Multiplicity of instruments: Schedule 1 lists 15 separate Airworthiness Directives to be revoked and re-made, increasing administrative items to track.","No substantive change clause: Note states each attached AD is re-made \"in exactly the same form as appears in the latest published edition of the Directive\", implying no technical amendments to content.","Versioning and amendments: several listed ADs include amendment notation (e.g. \"Amdt 1\"), requiring attention to correct edition/version when implementing.","Administrative mechanics: the instrument both revokes and re-makes each AD as a separate instrument (operation recorded in the recital and Schedule), which is a procedural rather than substantive regulatory action.","Separated technical detail: the main instrument delegates the technical requirements to the attached/re-made ADs (Schedule and Note), so users must consult multiple documents for compliance obligations."],"plain_english_summary":"Revokes a set of Eurocopter BO 105 airworthiness directives and re-issues each as a separate instrument, unchanged in substance. Made by a CASA delegate under subregulation 39.001(1) of the Civil Aviation Safety Regulations 1998, it affects owners, operators and maintenance providers of BO 105 helicopters because those directives set safety-related maintenance, inspection and modification requirements. Mechanically, it converts bundled directives into individually numbered instruments without altering technical content."}},"importantCases":[],"_links":{"self":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-eurocopter-bo-105-series-helicopters","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-eurocopter-bo-105-series-helicopters/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-eurocopter-bo-105-series-helicopters/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-eurocopter-bo-105-series-helicopters/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-eurocopter-bo-105-series-helicopters/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-eurocopter-bo-105-series-helicopters/documents"}}