{"id":"F2006B06416","name":"AD/R22/1 Amdt 1 - Main Rotor Blade","slug":"ad-r22-1-amdt-1-main-rotor-blade","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":47774,"registerId":"commonwealth-F2006B06416-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/R22/1 Amdt 1 - Main Rotor Blade","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\n![](image.001.png)  Robinson R22 Series Helicopters\n\n \n\n# AD/R22/1\n\nAmdt 1\n\nApplicability: Model R22 Series.\n\n# Main Rotor Blade 7/92\n\n \n\nRequirement: Remove from service all main rotor blades with Serial Numbers 1 through 91.\n\n \n\nNote: FAA AD 80-11-07 Amdt 39-3834 refers.\n\n \n\nCompliance: Unless already accomplished; prior to 30 June 1992.\n\n \n\nBackground: Delamination of the trailing edges and root end doublers of the main rotor blades may occur in normal service.\n\n \n\nAmendment 1 is raised to reflect the FAA requirement that the above affected main rotor blades be removed from service in order to prevent possible blade structural failure.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a straightforward safety directive with a single, specific purpose: removing defective rotor blades from service. The amendment simply updates the directive to reflect FAA requirements, without expanding beyond the original safety intent."},"complexity_factors":["Very short document (under 200 words)","Only 2 defined elements: specific aircraft model (R22 Series) and specific serial number range (1-91)","Single unconditional requirement with one deadline","No cross-references to other legislation sections (only a reference to related FAA directive for context)","No nested conditions or exceptions","Clear, direct command language ('Remove from service')"],"plain_english_summary":"This is an **Airworthiness Directive** — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA). It applies to **Robinson R22 Series helicopters**, a popular light helicopter model.\n\n**What it does:**\n- **Orders the immediate removal** of specific main rotor blades (serial numbers 1 through 91) from service\n- These blades must be taken off helicopters and replaced before **30 June 1992**\n\n**Why it matters:**\n- The blades can develop **delamination** — a dangerous condition where layers of the blade material separate from each other\n- This affects the **trailing edges** and **root end doublers** (reinforced areas where the blade attaches to the rotor hub)\n- If left unchecked, this damage could cause **blade structural failure** — potentially catastrophic in flight\n\n**Who it affects:**\n- Owners and operators of Robinson R22 helicopters\n- Maintenance engineers servicing these aircraft\n- Anyone with blades in the affected serial number range\n\nThis directive aligns with an equivalent US Federal Aviation Administration (FAA) safety order, ensuring Australian operators meet the same safety standard."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":true,"description":"Amendment 1 changes the Australian AD to require removal from service of main rotor blades serial numbers 1–91 for R22 helicopters, aligning the Australian requirement with the referenced FAA AD. The instrument adds an explicit removal requirement and a fixed compliance deadline (prior to 30 June 1992), and states the safety rationale as delamination risk that could lead to structural failure (Requirement; Compliance; Background; Amendment 1)."},"complexity_factors":["Narrow applicability: limited to Robinson R22 series helicopters (Applicability).","Single, clear technical action: removal from service of blades with serial numbers 1–91 (Requirement).","Fixed compliance date creates a simple timing constraint (Compliance).","Limited technical detail: cites delamination risk but does not set out inspection methods or repair standards (Background).","Dependency on parts supply and operational scheduling increases practical implementation complexity for operators (Requirement; Compliance).","Reference to a foreign regulator’s AD (FAA) adds an external alignment element but does not complicate the core requirement (Note; Amendment 1)."],"plain_english_summary":"Owners and operators of Robinson R22 helicopters must remove from service main rotor blades with serial numbers 1–91 by 30 June 1992. CASA issued this mandatory Part 39 airworthiness directive, reflecting an FAA action, because trailing-edge and root-end delamination in these blades can lead to structural failure. The rule shifts immediate costs and downtime to operators to eliminate the in-service failure risk."}},"importantCases":[],"_links":{"self":"/api/acts/ad-r22-1-amdt-1-main-rotor-blade","history":"/api/acts/ad-r22-1-amdt-1-main-rotor-blade/history","analysis":"/api/acts/ad-r22-1-amdt-1-main-rotor-blade/analysis","conflicts":"/api/acts/ad-r22-1-amdt-1-main-rotor-blade/conflicts","importantCases":"/api/acts/ad-r22-1-amdt-1-main-rotor-blade/important-cases","documents":"/api/acts/ad-r22-1-amdt-1-main-rotor-blade/documents"}}