{"id":"F2006B09586","name":"AD/ENST 28/3 - Cable Gauge/Circuit Protection Coordination - Modification","slug":"ad-enst-28-3-cable-gauge-circuit-protection-coordination-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":54291,"registerId":"commonwealth-F2006B09586-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/ENST 28/3 - Cable Gauge/Circuit Protection Coordination - 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\n![](image.001.png)  Enstrom F-28 Series Helicopters\n\n \n\nAD/ENST 28/3 Cable Gauge/Circuit Protection Coordination - Modification\n\n\n7/74\n\n \n\nApplicability: All models.\n\n \n\nRequirement: Modify the alternator system so that the cable gauge/circuit protection coordination complies with standards expressed in ANO Part 108 Section 108.32.\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\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":1533},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This directive remains narrowly focused on its original safety purpose: ensuring proper electrical circuit protection in Enstrom F-28 helicopter alternator systems. There is no evidence of scope expansion beyond the specific aircraft type and system originally targeted."},"complexity_factors":["Extremely brief text (approximately 50 words of substantive content)","Single unambiguous technical requirement","External reference to technical aviation standards (ANO Part 108) without reproducing the standard"],"plain_english_summary":"This airworthiness directive requires owners and operators of **Enstrom F-28 series helicopters** to modify the aircraft's alternator (electrical generator) system.\n\n**What you need to do:**\n- Ensure the electrical cables (wires) and their circuit protection devices (fuses or circuit breakers) are properly coordinated—meaning the protection matches the cable thickness and capacity\n- The modification must meet the technical standards specified in **ANO Part 108 Section 108.32** (Aircraft Navigation Orders)\n\n**Who it affects:**\n- All models of Enstrom F-28 helicopters\n- Must be completed **before** the aircraft can be issued with a Certificate of Airworthiness (the official document allowing it to fly legally)\n\n**Why it matters:**\nThis prevents electrical fires and system failures by ensuring wires cannot carry more electrical current than they are designed to handle. If a fault occurs, the circuit protection should trip before the cable overheats."}},"importantCases":[],"_links":{"self":"/api/acts/ad-enst-28-3-cable-gauge-circuit-protection-coordination-modification","history":"/api/acts/ad-enst-28-3-cable-gauge-circuit-protection-coordination-modification/history","analysis":"/api/acts/ad-enst-28-3-cable-gauge-circuit-protection-coordination-modification/analysis","conflicts":"/api/acts/ad-enst-28-3-cable-gauge-circuit-protection-coordination-modification/conflicts","importantCases":"/api/acts/ad-enst-28-3-cable-gauge-circuit-protection-coordination-modification/important-cases","documents":"/api/acts/ad-enst-28-3-cable-gauge-circuit-protection-coordination-modification/documents"}}