{"id":"F2006B08969","name":"AD/DHA-3/13 - Horizontal Tailplane Attachments - Inspection","slug":"ad-dha-3-13-horizontal-tailplane-attachments-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":52560,"registerId":"commonwealth-F2006B08969-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/DHA-3/13 - Horizontal Tailplane Attachments - Inspection","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)  DHA-3 (Drover) Series Aeroplanes\n\n \n\nAD/DHA-3/13 Horizontal Tailplane Attachments - Inspection 7/56\n\nApplicability: All models not modified in accordance with DH Mod. DRO 92, Issue 2.\n\n \n\nRequirement: 1. Inspect the horizontal tailplane rear spar for cracking in the vicinity of the spar to fuselage attachment brackets. This inspection is to be made using an approved penetrant method or a 10 power magnifying glass.\n\n \n\n2. If cracking has occurred repair the aeroplane to the satisfaction of the Secretary before further flight; or\n\n \n\n3. ANO 105.1.14.14.6.6.\n\n \n\nCompliance: At intervals not exceeding 100 hours time in service.\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":1756},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This directive maintains its original scope as a targeted safety measure to ensure structural integrity of specific aircraft through mandated recurring inspections."},"complexity_factors":["Specialized aviation terminology requiring technical knowledge (e.g., 'horizontal tailplane rear spar', 'fuselage attachment brackets')","Cross-reference to specific aircraft modification standard (DH Mod. DRO 92, Issue 2) for applicability","Alternative compliance pathway via cryptic reference to Air Navigation Order (ANO 105.1.14.14.6.6)","Conditional applicability based on modification history of individual aircraft"],"plain_english_summary":"This Airworthiness Directive requires owners/operators of DHA-3 (Drover) aeroplanes not modified by \"DH Mod. DRO 92, Issue 2\" to perform recurring inspections of the horizontal tailplane rear spar every 100 flight hours to detect cracks, using an approved penetrant or 10× magnification. Any crack found must be repaired to the Secretary’s satisfaction (or under ANO 105.1.14.14.6.6) before flight. It prevents catastrophic structural failure and loss of control."}},"importantCases":[],"_links":{"self":"/api/acts/ad-dha-3-13-horizontal-tailplane-attachments-inspection","history":"/api/acts/ad-dha-3-13-horizontal-tailplane-attachments-inspection/history","analysis":"/api/acts/ad-dha-3-13-horizontal-tailplane-attachments-inspection/analysis","conflicts":"/api/acts/ad-dha-3-13-horizontal-tailplane-attachments-inspection/conflicts","importantCases":"/api/acts/ad-dha-3-13-horizontal-tailplane-attachments-inspection/important-cases","documents":"/api/acts/ad-dha-3-13-horizontal-tailplane-attachments-inspection/documents"}}