{"id":"F2006B09101","name":"AD/DHC-6/14 - Fuselage to Wing Front Spar Attachments - Inspection","slug":"ad-dhc-6-14-fuselage-to-wing-front-spar-attachments-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115654,"registerId":"commonwealth-F2006B09101-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/DHC-6/14 - Fuselage to Wing Front Spar Attachments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)  DHC-6 (Twin Otter) Series Aeroplanes\n\n \n\nAD/DHC-6/14 Fuselage to Wing Front Spar Attachments - Inspection\n\nApplicability: All models with S/Nos. 1 to 161 not incorporating Mod. No. 6/1189. Document:  De Havilland Aircraft of Canada SB No. 6/149.\n\nCompliance: Within 200 hours time in service after 28 November 1968.\n\n\n10/68\n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2331},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This appears to be the original issuance of the directive, narrowly targeting a specific structural safety issue on specific aircraft models. No evidence of expansion beyond the original airworthiness safety intent."},"complexity_factors":["Relies entirely on external technical documents (Service Bulletin 6/149) for actual inspection procedures and standards","Applicability depends on tracking specific manufacturing serial numbers and modification history (Mod. No. 6/1189)","Uses technical aviation terminology (e.g., 'wing front spar', 'time in service') requiring domain knowledge"],"plain_english_summary":"**What it does:** This safety directive mandates an inspection of the structural connection points between the aircraft's fuselage (main body) and the wing front spar (the primary structural beam inside the wing) on specific De Havilland Twin Otter aeroplanes.\n\n**Who it affects:** Owners and operators of DHC-6 (Twin Otter) series aircraft with serial numbers 1 through 161, **unless** the aircraft has already been modified according to Modification No. 6/1189.\n\n**Requirements:**\n*   **Action:** Carry out the inspection following the procedures in De Havilland Service Bulletin No. 6/149.\n*   **Deadline:** Complete the inspection within 200 hours of flight time (measured as \"time in service\") after 28 November 1968.\n\n**Why it matters:** This check prevents catastrophic structural failure at the wing attachment points, which could lead to the wing separating from the fuselage during flight."}},"importantCases":[],"_links":{"self":"/api/acts/ad-dhc-6-14-fuselage-to-wing-front-spar-attachments-inspection","history":"/api/acts/ad-dhc-6-14-fuselage-to-wing-front-spar-attachments-inspection/history","analysis":"/api/acts/ad-dhc-6-14-fuselage-to-wing-front-spar-attachments-inspection/analysis","conflicts":"/api/acts/ad-dhc-6-14-fuselage-to-wing-front-spar-attachments-inspection/conflicts","importantCases":"/api/acts/ad-dhc-6-14-fuselage-to-wing-front-spar-attachments-inspection/important-cases","documents":"/api/acts/ad-dhc-6-14-fuselage-to-wing-front-spar-attachments-inspection/documents"}}