{"id":"F2006B07910","name":"Airworthiness Directives 2004 - Revocation and Remaking - Kawasaki BK 117 Series Helicopters","slug":"airworthiness-directives-2004-revocation-and-remaking-kawasaki-bk-117-series-helicopters","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":50939,"registerId":"commonwealth-F2006B07910-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 - Kawasaki 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\nKawasaki BK 117 Series Helicopters\n\nAD Name AD Number\n\nTail Rotor Blade Bonding AD/JBK 117/1 Amdt 1\n\nRetirement Life - Critical Components - CANCELLED AD/JBK 117/2 Amdt 1\n\nCowling Latches AD/JBK 117/3\n\nLanding Gear Electrical Bonding AD/JBK 117/4\n\nElectrical Bonding and Static Dischargers AD/JBK 117/5\n\nMain Rotor Blade AD/JBK 117/6 Amdt 3\n\nMain Rotor Control Components AD/JBK 117/7\n\nEngine Mount Sidewards Link AD/JBK 117/8 Amdt 2\n\nRetrofit of Engine Overspeed Controller AD/JBK 117/9\n\nTail Boom Vertical Fin Spar AD/JBK 117/10 Amdt 2\n\nRotor Mast Assembly AD/JBK 117/11\n\nEngine Mounting Sideward Link - CANCELLED AD/JBK 117/12\n\nEngine Mount Truss Supports AD/JBK 117/13\n\nTail Rotor Drive Long Shaft Hanger Bearing - Inspection of Fasteners AD/JBK 117/14\n\nTension-Torsion Straps AD/JBK 117/15 Amdt 2\n\nTransmission and Engine Cowling Hook System AD/JBK 117/16\n\nMain Rotor Blade Balance Weight - CANCELLED AD/JBK 117/17\n\nOne Engine Inoperative Performance Check AD/JBK 117/18\n\nVertical Fin Skin Panelling AD/JBK 117/19\n\nTail Rotor Transmission/Intermediate Gearbox AD/JBK 117/20\n\nRescue Winch Operation AD/JBK 117/21 Amdt 1\n\nAirwork Hoist Modification AD/JBK 117/22","sortOrder":0}],"analysis":{"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 note explicitly states each directive is being remade 'in exactly the same form as appears in the latest published edition.' This is purely administrative housekeeping to refresh legal instruments without expanding or altering their substantive safety requirements."},"complexity_factors":["Short, single-purpose instrument (under 2 pages)","No defined terms section — relies on external understanding of 'Airworthiness Directive' and aircraft systems","Simple binary structure: revoke list + remake list","Heavy reliance on external documents — the actual substantive requirements are contained in 19 separate attached directives not reproduced here","Minimal conditional logic — straightforward delegation and execution","Cross-reference to Civil Aviation Safety Regulations 1998 (subregulation 39.001(1)) but no complex statutory interpretation required"],"plain_english_summary":"This instrument updates CASA’s maintenance rules for Kawasaki BK 117 helicopters in Australia by revoking 22 existing airworthiness directives and immediately remaking 19 of them to keep the legal instruments current. It affects owners, operators, maintenance organisations and businesses using these helicopters, and preserves enforceable requirements for critical components (rotors, engines, landing gear, winches). The change is administrative: the underlying safety obligations remain the same."},"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"Scope not changed: the instrument expressly revokes and then remakes each listed AD “in exactly the same form” (Note). Schedule 1 lists the affected Kawasaki BK 117 ADs (some marked CANCELLED); no substantive amendment to those ADs is made here, only an administrative reissue to confirm their legal form."},"complexity_factors":["Administrative revocation-and-remaking process is procedurally simple but legally consequential (delegate exercise under subregulation 39.001(1)).","Large set of ADs listed in Schedule 1 requires recipients to check multiple instruments.","Some entries are marked CANCELLED, introducing mixed legal status that recipients must track.","The instrument relies on attached ADs (not reproduced in full here) — users must consult attachments to see operative requirements.","Effects are continuity-focused rather than substantive change, but that preserves existing compliance burdens and recordkeeping obligations.","Potential coordination burden for operators and maintenance organisations to update documentation and compliance systems."],"plain_english_summary":"This instrument (20 Dec 2004) revokes the Airworthiness Directives listed in Schedule 1 and remakes each as a separate, attached instrument under subregulation 39.001(1) of the Civil Aviation Safety Regulations 1998. It affects owners, operators and maintenance organisations of Kawasaki BK 117 helicopters by confirming the legal form and continuity of the listed AD requirements; compliance obligations, recordkeeping and administrative costs therefore remain with those operators."}},"importantCases":[],"_links":{"self":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-kawasaki-bk-117-series-helicopters","history":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-kawasaki-bk-117-series-helicopters/history","analysis":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-kawasaki-bk-117-series-helicopters/analysis","conflicts":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-kawasaki-bk-117-series-helicopters/conflicts","importantCases":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-kawasaki-bk-117-series-helicopters/important-cases","documents":"/api/acts/airworthiness-directives-2004-revocation-and-remaking-kawasaki-bk-117-series-helicopters/documents"}}