{"id":"F2006B05072","name":"AD/CESSNA 180/59 Amdt 1 - Alternator Ground Strap","slug":"ad-cessna-180-59-amdt-1-alternator-ground-strap","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44982,"registerId":"commonwealth-F2006B05072-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 180/59 Amdt 1 - Alternator Ground Strap","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)  Cessna 180, 182 and Wren 460 Series Aeroplanes\n\n \n\nAD/CESSNA 180/59\n\nAmdt 1\n\n\nAlternator Ground Strap 9/82\n\n \n\nApplicability: All model 180 with S/Nos. 18051762 to 18052981 except 18052975.\n\n \n\nAll models 182/A182/F182 with S/Nos. 18257446 to 18266590, A1820001 to A1820146, F18200001 to F18200094.\n\n \n\nRequirement: Action in accordance with Cessna SIL SE79-59.\n\n \n\nNote: FAA AD 79-25-07 refers.\n\n \n\nCompliance: 1. Within 100 hours time in service after 31 March 1982.\n\n \n\n2. Each time an engine is installed in an aircraft following initial compliance.\n\n \n\nBackground: Compliance has been amended with the addition of Para 2 due to reports from industry that ground straps are being omitted from refitment on engine reinstallations.\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 AD remains tightly scoped to its original purpose — ensuring alternator ground straps are installed on specific Cessna aircraft. The Amendment 1 simply adds a recurring compliance requirement (on engine reinstallation) to address a practical maintenance oversight. This is a refinement of implementation, not scope creep."},"complexity_factors":["Single, specific mechanical requirement (install ground strap per manufacturer bulletin)","Limited applicability — only three aircraft model families with defined serial number ranges","Simple two-part compliance structure (initial deadline + recurring requirement)","No defined terms section, no cross-references to other legislation beyond one FAA AD reference","Background explanation is plain English and describes exactly why the amendment was made","Total length is approximately 200 words"],"plain_english_summary":"**What this is:** This is an Airworthiness Directive (AD) — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA). ADs are legally binding instructions that aircraft owners and operators must follow to fix unsafe conditions in aircraft.\n\n**What it does:** This AD requires owners of specific Cessna 180 and 182 model aeroplanes (plus the Wren 460 series) to inspect and properly install an **alternator ground strap** — a safety-critical electrical connection that prevents dangerous electrical faults.\n\n**Who it affects:**\n- **Cessna 180 models:** Serial numbers 18051762 to 18052981 (except 18052975)\n- **Cessna 182 models:** Multiple variants including standard 182, A182, and F182 with specific serial number ranges listed\n\n**What must be done:**\n- Follow the instructions in **Cessna Service Information Letter SE79-59** (the manufacturer's official repair guidance)\n- Complete the work **within 100 hours of flying time** after 31 March 1982\n- **Crucially:** Every time an engine is removed and reinstalled, the ground strap must be refitted — this was added because mechanics were forgetting to reinstall these straps during engine work\n\n**Why it matters:** Missing ground straps can cause electrical failures or fires. The amendment (Amdt 1) closes a loophole where straps were being left off during engine maintenance, creating an ongoing safety risk even after the initial fix."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":true,"description":"Scope was expanded by adding Compliance paragraph 2 to require action each time an engine is installed after initial compliance, turning a one-off deadline into a recurring obligation for owners/operators and maintenance organisations (see Compliance para 2 and Background)."},"complexity_factors":["Narrow applicability by serial-number ranges (Applicability).","Requirement depends on external manufacturer instruction: Cessna SIL SE79-59 (Requirement).","Timed compliance deadline and recurring trigger: within 100 hours after 31 March 1982 and each time an engine is installed after initial compliance (Compliance paras 1–2).","Amendment added due to operational reports that straps were omitted on engine refits, creating an ongoing maintenance verification obligation (Background).","Cross-reference to FAA AD 79-25-07 for related guidance (Note)."],"plain_english_summary":"Mandates inspection or installation of the alternator ground strap on specified Cessna 180, 182 and Wren 460 series aeroplanes by following Cessna Service Information Letter SE79‑59. Applies to listed serial-number ranges and is issued by the Civil Aviation Safety Authority.\n\nOwners, operators and maintenance organisations must comply within 100 flight hours after 31 March 1982 and each time an engine is installed after initial compliance, to ensure the alternator grounding strap is fitted when engines are refitted."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-180-59-amdt-1-alternator-ground-strap","history":"/api/acts/ad-cessna-180-59-amdt-1-alternator-ground-strap/history","analysis":"/api/acts/ad-cessna-180-59-amdt-1-alternator-ground-strap/analysis","conflicts":"/api/acts/ad-cessna-180-59-amdt-1-alternator-ground-strap/conflicts","importantCases":"/api/acts/ad-cessna-180-59-amdt-1-alternator-ground-strap/important-cases","documents":"/api/acts/ad-cessna-180-59-amdt-1-alternator-ground-strap/documents"}}