{"id":"F2006B02556","name":"AD/AT/7 - Horizontal Stabiliser Eyebolts","slug":"ad-at-7-horizontal-stabiliser-eyebolts","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41812,"registerId":"commonwealth-F2006B02556-current","compilationNumber":null,"startDate":"2026-04-01","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/AT/7 - Horizontal Stabiliser Eyebolts","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)  Airtractor AT-300, 400 and 500 Series Aeroplanes\n\n \n\nAD/AT/7 Horizontal Stabiliser Eyebolts 7/86 TX\n\nApplicability: All models S/Nos 0001 to 0634.\n\n \n\nRequirement: Action in accordance with Snow Engineering Co. SL No. 62. Compliance:  Within 20 hours time in service after 28 May 1986.\n\nBackground: There have been several reports of failure of the strut attach eyebolt.\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\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1415},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This remains a targeted safety directive addressing a specific mechanical defect in defined aircraft. It has not expanded beyond its original purpose of mandating inspection and repair of faulty horizontal stabiliser eyebolts."},"complexity_factors":["Single, unambiguous applicability clause (specific aircraft models and serial number range)","Only one mandatory action required (compliance with a single referenced service letter)","No conditional logic, exceptions, or nested provisions","Minimal cross-referencing (only to Snow Engineering SL No. 62)","Extremely brief document with plain language requirements"],"plain_english_summary":"**What this does:** This Airworthiness Directive (AD) mandates urgent safety work on specific agricultural aircraft. Owners and operators of Airtractor AT-300, 400, and 500 series aeroplanes (serial numbers 0001 to 0634) must inspect and repair the horizontal stabiliser eyebolts following the procedures set out in Snow Engineering Service Letter No. 62.\n\n**Who it affects:** Anyone operating these specific aircraft models.\n\n**What must be done:** The repair must be completed within 20 hours of flight time after 28 May 1986.\n\n**Why it matters:** Several eyebolts that attach the strut to the horizontal stabiliser have failed. This is a critical structural component, and failure could lead to loss of aircraft control. This directive makes the repair legally mandatory (not optional) to prevent potentially catastrophic accidents."}},"importantCases":[],"_links":{"self":"/api/acts/ad-at-7-horizontal-stabiliser-eyebolts","history":"/api/acts/ad-at-7-horizontal-stabiliser-eyebolts/history","analysis":"/api/acts/ad-at-7-horizontal-stabiliser-eyebolts/analysis","conflicts":"/api/acts/ad-at-7-horizontal-stabiliser-eyebolts/conflicts","importantCases":"/api/acts/ad-at-7-horizontal-stabiliser-eyebolts/important-cases","documents":"/api/acts/ad-at-7-horizontal-stabiliser-eyebolts/documents"}}