{"id":"F2006B02100","name":"AD/AC/41 - Nose Gear Support Structure - Inspection","slug":"ad-ac-41-nose-gear-support-structure-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41330,"registerId":"commonwealth-F2006B02100-current","compilationNumber":null,"startDate":"2026-04-01","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/AC/41 - Nose Gear Support Structure - Inspection","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 7/1969,Aircraft below 5700 kg,Twin Commander (Gulfstream/Rockwell/ Aerocommander 500, 600 and 700) Series Aeroplanes,Nose Gear Support Structure - Inspection,41\ntitle: Airworthiness Directive - AD/AC/41 - Nose Gear Support Structure - Inspection\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)  Twin Commander (Gulfstream/Rockwell/ Aerocommander 500, 600 and 700) Series Aeroplanes\n\n \n\nAD/AC/41 Nose Gear Support Structure - Inspection 7/69\n\nApplicability: Model 680W S/Nos. 1726 to 1834. Document:  Aero Commander SB No. 95.\n\nCompliance: Forthwith 4 July 1969.\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":1422},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"The directive retains its original narrow scope from 1969, requiring only a specific one-time inspection on defined aircraft. There is no evidence of expansion beyond the original safety intent."},"complexity_factors":["Single operative requirement with no exceptions or nested conditions","Limited applicability to one specific aircraft model and serial number range","No defined terms or interpretation section","No cross-references to other legislative provisions","Clear, immediate compliance deadline"],"plain_english_summary":"**What this does:** This is a mandatory safety notice (an **Airworthiness Directive**) issued by the Civil Aviation Safety Authority. It requires an immediate inspection of the nose gear support structure on specific Twin Commander aircraft to ensure it is structurally sound.\n\n**Who it affects:** Owners and operators of **Twin Commander Model 680W aeroplanes** with serial numbers **1726 to 1834**.\n\n**What must be done:** The nose gear support structure must be inspected in accordance with **Aero Commander Service Bulletin No. 95**. The compliance deadline was **4 July 1969**.\n\n**Why it matters:** This prevents potential structural failure of the nose landing gear, which could lead to accidents during takeoff, landing, or while the aircraft is on the ground."}},"importantCases":[],"_links":{"self":"/api/acts/ad-ac-41-nose-gear-support-structure-inspection","history":"/api/acts/ad-ac-41-nose-gear-support-structure-inspection/history","analysis":"/api/acts/ad-ac-41-nose-gear-support-structure-inspection/analysis","conflicts":"/api/acts/ad-ac-41-nose-gear-support-structure-inspection/conflicts","importantCases":"/api/acts/ad-ac-41-nose-gear-support-structure-inspection/important-cases","documents":"/api/acts/ad-ac-41-nose-gear-support-structure-inspection/documents"}}