{"id":"F2006B04552","name":"AD/BELL 212/2 Amdt 3 - Main Rotor Blade - Inspection and Modification","slug":"ad-bell-212-2-amdt-3-main-rotor-blade-inspection-and-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114282,"registerId":"commonwealth-F2006B04552-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BELL 212/2 Amdt 3 - Main Rotor Blade - Inspection and Modification","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\nBell Helicopter Textron 212 Series Helicopters\n\n \n\nAD/BELL 212/2\n\nAmdt 3\n\n\nMain Rotor Blade - Inspection and Modification\n\n\n3/80\n\n \n\nApplicability: All models with main rotor blades P/No. 204-012-001 (all dash numbers) and P/N 212-015-501-5.\n\n \n\nDocument: Bell SB No. 212-75-6, Rev. C. Compliance:  As detailed in the requirement document.\n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is Amendment 3 to an existing Airworthiness Directive, but the scope remains tightly focused on the original safety issue regarding specific main rotor blade part numbers. The amendment appears to maintain the same applicability and core requirement (inspection and modification per the Bell service bulletin)."},"complexity_factors":["Very short document (approximately 150 words)","Only 2 defined part numbers in applicability section","Single cross-reference to external technical document (Bell Service Bulletin)","No conditional logic or nested exceptions","Straightforward compliance requirement: follow the service bulletin","No interpretation section or defined terms"],"plain_english_summary":"This is an **Airworthiness Directive** — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) that requires owners and operators of specific Bell 212 helicopters to inspect and modify their main rotor blades.\n\n**What it does:**\n- Requires inspection and modification of main rotor blades on Bell 212 series helicopters\n- Applies to blades with specific part numbers: 204-012-001 (all versions) and 212-015-501-5\n- Operators must follow the procedures in Bell Service Bulletin 212-75-6, Revision C\n\n**Who it affects:**\n- Owners and operators of Bell 212 helicopters with the affected blade part numbers\n- Maintenance organisations servicing these aircraft\n\n**Why it matters:**\nMain rotor blades are critical safety components. This directive addresses a specific safety concern (likely fatigue, cracking, or structural weakness) that could lead to blade failure and catastrophic accident if not addressed. Compliance is mandatory — operators cannot legally fly the aircraft until the work is done as specified."},"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":true,"description":"The instrument is presented as Amendment 3 (\"Amdt 3\"), which indicates the text has been changed from prior versions. The provided extract does not specify what elements of scope or requirements were altered compared with earlier amendments, so the nature of the change cannot be determined from this text alone."},"complexity_factors":["Directive text is short and delegates all technical detail to an external document (Bell SB No. 212-75-6, Rev. C), creating reliance on that bulletin for compliance specifics.","Applicability is narrowly defined by part numbers (P/No. 204-012-001 and P/N 212-015-501-5), requiring operators to check inventory records and part marking to determine coverage.","Labelled as Amendment 3 (Amdt 3) but the extract does not state what was changed from prior versions, requiring comparison with earlier amendments to understand scope evolution.","Regulatory authority is referenced (Civil Aviation Regulations 1998, Part 39 - 105), but the extract does not include enforcement or penalty provisions in itself.","The compliance instruction is open-ended in the extract: 'As detailed in the requirement document' — the AD does not list intervals, methods, or acceptance criteria within the provided text.","Date or identifier '3/80' appears but is not explained in the extract, leaving timing or versioning ambiguous."],"plain_english_summary":"This airworthiness directive requires owners/operators of Bell 212 helicopters with main rotor blades P/No. 204-012-001 (all dash numbers) or P/N 212-015-501-5 to carry out inspections and modifications as specified in Bell Service Bulletin No. 212-75-6, Revision C. It affects maintenance organisations and technicians, imposes compliance costs and potential downtime, and delegates technical detail to the external Service Bulletin (the AD itself gives no on‑its‑face technical rationale)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-bell-212-2-amdt-3-main-rotor-blade-inspection-and-modification","history":"/api/acts/ad-bell-212-2-amdt-3-main-rotor-blade-inspection-and-modification/history","analysis":"/api/acts/ad-bell-212-2-amdt-3-main-rotor-blade-inspection-and-modification/analysis","conflicts":"/api/acts/ad-bell-212-2-amdt-3-main-rotor-blade-inspection-and-modification/conflicts","importantCases":"/api/acts/ad-bell-212-2-amdt-3-main-rotor-blade-inspection-and-modification/important-cases","documents":"/api/acts/ad-bell-212-2-amdt-3-main-rotor-blade-inspection-and-modification/documents"}}