{"id":"F2006B02201","name":"AD/AC-SNOW/10 - Safety Harness - Installation","slug":"ad-ac-snow-10-safety-harness-installation","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41431,"registerId":"commonwealth-F2006B02201-current","compilationNumber":null,"startDate":"2026-04-01","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/AC-SNOW/10 - Safety Harness - Installation","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 5/1968,Aircraft below 5700 kg,Ayres Thrush (Snow) Commander Series Aeroplanes,Safety Harness - Installation,10\ntitle: Airworthiness Directive - AD/AC-SNOW/10 - Safety Harness - Installation\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)  Ayres Thrush (Snow) Commander Series Aeroplanes\n\n \n\nAD/AC-SNOW/10 Safety Harness - Installation 5/68\n\nApplicability: Model S-2D.\n\n \n\nRequirement: Install a safety harness meeting the requirements specified in ANO Section 100.20. 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","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1638},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This directive retains its original narrow 1968 scope of requiring safety harness installation in specific agricultural aircraft. There is no evidence of scope creep or expansion beyond the original pilot safety intent."},"complexity_factors":["Single, unambiguous requirement (install one specific piece of equipment)","Immediate compliance with no conditional triggers, exceptions, or phased implementation","Narrow applicability limited to one specific aircraft model (S-2D)","No defined terms or interpretation sections","Minimal cross-referencing (only one external technical standard: ANO Section 100.20)"],"plain_english_summary":"**What this means:** If you own or operate an Ayres Thrush (also known as Snow Commander) model S-2D agricultural aircraft, you must immediately install a safety harness for the pilot.\n\n**Who it affects:** Owners and operators of Ayres Thrush/Snow Commander S-2D aeroplanes—typically used for crop-dusting and agricultural spraying.\n\n**What you must do:** Fit a pilot's safety harness that meets the technical standards in Airworthiness Notice (ANO) Section 100.20. This ensures the restraint system can withstand the forces of agricultural flying operations.\n\n**When:** Immediately. The term **'forthwith'** means there is no grace period—you must comply right away.\n\n**Why it matters:** This is a critical safety measure to protect pilots during high-risk low-level agricultural operations by ensuring they remain securely seated in the cockpit."}},"importantCases":[],"_links":{"self":"/api/acts/ad-ac-snow-10-safety-harness-installation","history":"/api/acts/ad-ac-snow-10-safety-harness-installation/history","analysis":"/api/acts/ad-ac-snow-10-safety-harness-installation/analysis","conflicts":"/api/acts/ad-ac-snow-10-safety-harness-installation/conflicts","importantCases":"/api/acts/ad-ac-snow-10-safety-harness-installation/important-cases","documents":"/api/acts/ad-ac-snow-10-safety-harness-installation/documents"}}