{"id":"F2006B08535","name":"AD/CHA/1 - Rudder Pedal Guard","slug":"ad-cha-1-rudder-pedal-guard","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":51303,"registerId":"commonwealth-F2006B08535-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CHA/1 - Rudder Pedal Guard","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)  American Champion (Aeronca, Bellanca) Series Aeroplanes\n\n \n\nAD/CHA/1 Rudder Pedal Guard 3/67\n\nApplicability: Models 7ECA, 7GCAA, 7GCBC and 7GCB. Requirement:  Action in accordance with Champion SL No 73. Compliance:               Before 1 September 1971.\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\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive’s scope is confined to the named models (7ECA, 7GCAA, 7GCBC and 7GCB) and requires action per Champion SL No 73 by the stated deadline. The text contains no indication that the applicability, required action, or deadline have been altered from what is set out in this instrument."},"complexity_factors":["Narrow applicability: only four specific aircraft models listed (reduces scope complexity).","Delegation of technical detail to an external document (Champion SL No 73) increases practical complexity for implementers who must obtain and follow that document.","Fixed compliance deadline requires scheduling and resource allocation by operators.","Regulatory enforcement falls under the Civil Aviation safety framework, but the AD itself is short and procedural rather than technically detailed.","Potential ambiguity if the referenced service letter is unavailable or unclear (administrative/implementation complexity)."],"plain_english_summary":"Owners and operators of American Champion Models 7ECA, 7GCAA, 7GCBC and 7GCB must install the rudder-pedal guard as specified in Champion Service Letter No. 73. The directive delegates the technical steps to that service letter and places compliance responsibility on the aircraft owner/operator.\n\nWork had to be completed before 1 September 1971; failure to comply risks regulatory enforcement under the applicable Airworthiness Directives framework."},"kimi_summary":{"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This is a discrete, single-issue airworthiness directive focused specifically on rudder pedal guards for four aircraft models. It has not expanded beyond its original narrow safety purpose."},"complexity_factors":["Extremely short document (under 100 words of substantive content)","No defined terms section","No cross-references to other legislation beyond the enabling Civil Aviation Regulations 1998","Simple conditional structure: single applicability criterion (specific aircraft models) and single requirement (follow manufacturer's service letter)","No exceptions, exemptions, or nested conditions","Straightforward compliance deadline with no alternative methods of compliance (AMOCs) specified in the text"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** issued by Australia's Civil Aviation Safety Authority (CASA) under the Civil Aviation Regulations 1998. It mandates a safety modification for specific American Champion aircraft models.\n\n**What it does:**\n- Requires owners/operators of certain American Champion aeroplanes (Models 7ECA, 7GCAA, 7GCBC, and 7GCB) to install a **rudder pedal guard**\n- The modification must follow the manufacturer's Service Letter No. 73 (Champion SL No 73)\n\n**Who it affects:**\n- Owners and operators of the specified American Champion aircraft models (formerly manufactured under Aeronca and Bellanca names)\n\n**Why it matters:**\n- Airworthiness Directives are legally binding safety orders. Non-compliance means the aircraft cannot legally fly.\n- The rudder pedal guard likely prevents accidental interference with rudder controls—critical for flight safety.\n\n**Key deadline:**\n- The modification had to be completed before **1 September 1971** (this is a historical directive, now long past its compliance date)"}},"importantCases":[],"_links":{"self":"/api/acts/ad-cha-1-rudder-pedal-guard","history":"/api/acts/ad-cha-1-rudder-pedal-guard/history","analysis":"/api/acts/ad-cha-1-rudder-pedal-guard/analysis","conflicts":"/api/acts/ad-cha-1-rudder-pedal-guard/conflicts","importantCases":"/api/acts/ad-cha-1-rudder-pedal-guard/important-cases","documents":"/api/acts/ad-cha-1-rudder-pedal-guard/documents"}}