{"id":"F2006B02095","name":"AD/AC/37 - Cockpit Windows - Modification","slug":"ad-ac-37-cockpit-windows-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41325,"registerId":"commonwealth-F2006B02095-current","compilationNumber":null,"startDate":"2026-04-01","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/AC/37 - Cockpit Windows - Modification","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 2/1968,Aircraft below 5700 kg,Twin Commander (Gulfstream/Rockwell/ Aerocommander 500, 600 and 700) Series Aeroplanes,Cockpit Windows - Modification,37\ntitle: Airworthiness Directive - AD/AC/37 - Cockpit Windows - Modification\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/37 Cockpit Windows - Modification 2/68\n\nApplicability: All 680T and 680V models. Document:  Aero Commander SB No. 93. Compliance:  Forthwith.\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":1157},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This airworthiness directive maintains its original narrow scope, addressing only the specific cockpit window modification requirement for the identified aircraft models."},"complexity_factors":["Single paragraph directive with no subsections","No definitions or interpretation provisions","Only two specific aircraft models covered (680T and 680V)","Single unconditional compliance requirement","No exceptions, exemptions, or transitional provisions"],"plain_english_summary":"**What this does:** This is a mandatory safety order (called an Airworthiness Directive) that requires owners and operators of specific Twin Commander aircraft to modify their cockpit windows immediately.\n\n**Who it affects:** Anyone who owns or operates the 680T and 680V model Twin Commander aeroplanes (also marketed as Gulfstream/Rockwell/Aero Commander 500, 600 and 700 series).\n\n**What needs to happen:** Operators must carry out modifications to the cockpit windows in accordance with Aero Commander Service Bulletin No. 93. The instruction to comply \"forthwith\" means immediately—without waiting for the next scheduled maintenance check.\n\n**Why it matters:** This directive is legally binding under the Civil Aviation Regulations. Flying these aircraft without making the required modification would violate the law and potentially compromise flight safety."}},"importantCases":[],"_links":{"self":"/api/acts/ad-ac-37-cockpit-windows-modification","history":"/api/acts/ad-ac-37-cockpit-windows-modification/history","analysis":"/api/acts/ad-ac-37-cockpit-windows-modification/analysis","conflicts":"/api/acts/ad-ac-37-cockpit-windows-modification/conflicts","importantCases":"/api/acts/ad-ac-37-cockpit-windows-modification/important-cases","documents":"/api/acts/ad-ac-37-cockpit-windows-modification/documents"}}