{"id":"F2006B02032","name":"AD/AA-1/2 - Alternator Field Protection - Modification","slug":"ad-aa-1-2-alternator-field-protection-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41254,"registerId":"commonwealth-F2006B02032-current","compilationNumber":null,"startDate":"2026-04-01","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/AA-1/2 - Alternator Field Protection - Modification","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-description: CASA Airworthiness Directive\nmeta-generator: Aspose.Words for .NET 22.10.0\nmeta-keywords: Issue NK,Aircraft below 5700 kg,Gulfstream (Grumman American/ American Aviation) AA-1 Series Aeroplanes,Alternator Field Protection - Modification,2\ntitle: Airworthiness Directive - AD/AA-1/2 - Alternator Field Protection - Modification\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)  Gulfstream (Grumman American/ American Aviation) AA-1 Series Aeroplanes\n\n \n\nAD/AA-1/2 Alternator Field Protection - Modification NK\n\nApplicability: Model AA-1A.\n\n \n\nRequirement: Install an appropriately rated and identified circuit protector in the alternator field circuit at the connection to the main bus bar.\n\n \n\nCompliance: Before issue of a Certificate of Airworthiness.\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":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1512},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive maintains its original narrow scope: a specific airworthiness modification for the AA-1A model. No expansion beyond the initial alternator field protection requirement is evident."},"complexity_factors":["Single, concise operational requirement","No internal definitions or interpretation sections","Reliance on external technical standards to determine 'appropriately rated' specifications"],"plain_english_summary":"**What it is:** A safety mandate for owners of **Gulfstream AA-1A aircraft** (light, single-engine planes).\n\n**What it requires:** Install a **circuit protector**—such as a fuse or circuit breaker—on the electrical line feeding the alternator field (the part of the electrical system that helps charge the battery). This prevents the alternator from damaging the aircraft's electrical bus bar.\n\n**Who must comply:** Anyone seeking a **Certificate of Airworthiness** (official permission to fly) for this specific aircraft model. The modification must be completed *before* certification is granted.\n\n**Why it matters:** Protects against electrical failures that could disable the aircraft's charging system and potentially lead to loss of electrical power in flight."}},"importantCases":[],"_links":{"self":"/api/acts/ad-aa-1-2-alternator-field-protection-modification","history":"/api/acts/ad-aa-1-2-alternator-field-protection-modification/history","analysis":"/api/acts/ad-aa-1-2-alternator-field-protection-modification/analysis","conflicts":"/api/acts/ad-aa-1-2-alternator-field-protection-modification/conflicts","importantCases":"/api/acts/ad-aa-1-2-alternator-field-protection-modification/important-cases","documents":"/api/acts/ad-aa-1-2-alternator-field-protection-modification/documents"}}