{"id":"F2006B09077","name":"AD/DHC-3/28 - Front Fuselage - Windshield Post","slug":"ad-dhc-3-28-front-fuselage-windshield-post","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":52863,"registerId":"commonwealth-F2006B09077-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/DHC-3/28 - Front Fuselage - Windshield Post","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)  DHC-3 (Otter) Series Aeroplanes\n\n \n\nAD/DHC-3/28 Front Fuselage - Windshield Post 5/77\n\nApplicability: All models.\n\n \n\nRequirement: Action in accordance with De H Canada SB No 3/29. Compliance:  Within 100 hours time in service after 30 June 1977.\n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2129},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This directive maintains its original narrow, technical scope focused solely on DHC-3 Otter windshield post integrity. It requires specific manufacturer-mandated action, consistent with the standard purpose of airworthiness directives."},"complexity_factors":["Requires compliance with an external technical document (Service Bulletin No 3/29) rather than spelling out procedural steps","Single, specific applicability criterion (all models of one aircraft type)","Precise compliance deadline tied to aircraft flight hours (100 hours time in service)","Minimal conditional logic or exceptions"],"plain_english_summary":"**What this law does:**\nThis Airworthiness Directive (a mandatory safety order) requires owners and operators of De Havilland Canada DHC-3 Otter aircraft to inspect or repair the **front fuselage windshield post** (the structural frame supporting the cockpit windows).\n\n**Who it affects:**\nAnyone who owns or operates any model of DHC-3 (Otter) series aeroplanes registered in Australia.\n\n**What you must do:**\nCarry out the specific inspections or repairs detailed in the manufacturer's technical document — **De Havilland Canada Service Bulletin No 3/29**.\n\n**When you must do it:**\nWithin 100 hours of flight time after 30 June 1977.\n\n**Why it matters:**\nThis prevents potential structural failure of the windshield support frame, which could compromise cockpit integrity and flight safety."}},"importantCases":[],"_links":{"self":"/api/acts/ad-dhc-3-28-front-fuselage-windshield-post","history":"/api/acts/ad-dhc-3-28-front-fuselage-windshield-post/history","analysis":"/api/acts/ad-dhc-3-28-front-fuselage-windshield-post/analysis","conflicts":"/api/acts/ad-dhc-3-28-front-fuselage-windshield-post/conflicts","importantCases":"/api/acts/ad-dhc-3-28-front-fuselage-windshield-post/important-cases","documents":"/api/acts/ad-dhc-3-28-front-fuselage-windshield-post/documents"}}