{"id":"F2006B07857","name":"Airworthiness Directives 2004 - Revocation and Remaking - Eurocopter BK 117 Series Helicopters","slug":"airworthiness-directives-2004-revocation-and-remaking-eurocopter-bk-117-series-helicopters","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":50822,"registerId":"commonwealth-F2006B07857-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 BK 117 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 BK 117 Series Helicopters\n\nAD Name AD Number\n\nTail Rotor Blade Bonding AD/GBK 117/1 Amdt 1\n\nRetirement Life - Critical Components - CANCELLED AD/GBK 117/2 Amdt 2\n\nCowling Latches AD/GBK 117/3 Amdt 1\n\nLanding Gear Electrical Bonding AD/GBK 117/4\n\nElectrical Bonding and Static Dischargers AD/GBK 117/5\n\nMain Rotor Blade AD/GBK 117/6 Amdt 2\n\nRetrofit of Engine Overspeed Controller AD/GBK 117/7\n\nTail Boom Vertical Fin Spar AD/GBK 117/8 Amdt 2\n\nRotor Mast Assembly AD/GBK 117/9\n\nIntroduction of a Life Limit on Tail Rotor Drive Bevel Gear AD/GBK 117/10\n\nTension-Torsion Straps AD/GBK 117/11 Amdt 1\n\nTransmission and Engine Cowling Hook System AD/GBK 117/12\n\nVertical Fin Skin Panelling AD/GBK 117/13\n\nTail Rotor Drive Bearings AD/GBK 117/14","sortOrder":0}],"analysis":{"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"},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This instrument maintains the exact same scope as the original Airworthiness Directives. The document explicitly states that each directive is being re-made \"in exactly the same form as appears in the latest published edition.\" This is purely a procedural reissuance, not an expansion of regulatory scope."},"complexity_factors":["Very short document (under 500 words)","Only 2 operative provisions (revocation and remaking)","Simple tabular schedule listing 14 items with 2 columns each","No defined terms section","No conditional logic or nested exceptions","Single cross-reference to Civil Aviation Safety Regulations 1998 (subregulation 39.001(1))","Straightforward administrative remaking without substantive amendment"],"plain_english_summary":"This Airworthiness Directive from CASA (signed by David Villiers) formally revokes 14 existing ADs for Eurocopter BK 117 helicopters and reissues them as 14 separate, standalone legal instruments. The substance of the requirements isn’t changing — this is administrative housekeeping to reorganise how the safety rules are structured.\n\nIt affects Australian owners, operators and maintenance organisations for BK 117s; one listed AD (retirement life of critical components) was already cancelled."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"Scope unchanged: the instrument expressly revokes and re-makes each listed Airworthiness Directive “in exactly the same form as appears in the latest published edition of the Directive,” so substantive requirements and affected population remain the same."},"complexity_factors":["Administrative revocation and re-issuance only — no substantive technical changes (note: “exactly the same form” appears in the instrument).","Authorising power is a single subregulation (subregulation 39.001(1) of the Civil Aviation Safety Regulations 1998).","Multiple ADs listed (13 items), increasing record-keeping and tracking for operators and regulators.","Compliance burden persists for operators and maintenance organisations because obligations continue unchanged.","Low interpretive ambiguity — attached ADs remain the operative texts and must be consulted for technical requirements."],"plain_english_summary":"This instrument revokes a list of Airworthiness Directives for Eurocopter BK 117 series helicopters and re-issues each as a separate instrument under subregulation 39.001(1) of the Civil Aviation Safety Regulations 1998. The re-made ADs are identical to their latest published versions.\n\nWho is affected: helicopter owners, operators and maintenance organisations who must comply with the ADs and bear any associated costs. Decision-maker: a delegate of the Civil Aviation Safety Authority. The change is administrative; obligations remain and operators must refer to the newly issued instruments for compliance."}},"importantCases":[],"_links":{"self":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-eurocopter-bk-117-series-helicopters","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-eurocopter-bk-117-series-helicopters/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-eurocopter-bk-117-series-helicopters/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-eurocopter-bk-117-series-helicopters/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-eurocopter-bk-117-series-helicopters/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-eurocopter-bk-117-series-helicopters/documents"}}