{"id":"F2006B10051","name":"AD/G1159/8 - Aileron Control System - Inspection","slug":"ad-g1159-8-aileron-control-system-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":55491,"registerId":"commonwealth-F2006B10051-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/G1159/8 - Aileron Control System - 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)  Gulfstream (Grumman) G1159 and G-IV Series Aeroplanes\n\n \n\nAD/G1159/8 Aileron Control System - Inspection 8/73\n\nApplicability: All models with S/Nos. 1 to 119 and 775. Document:  Grumman Customer Bulletin No. 163.\n\nCompliance: Within 100 hours time in service after 31 August 1973 unless already accomplished.\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\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1546},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"The directive maintains its original narrow scope: a targeted safety inspection for specific Gulfstream aircraft serial numbers. There is no evidence of expansion beyond the original technical safety purpose."},"complexity_factors":["Single unambiguous compliance requirement with no nested conditions","Limited applicability criteria (specific aircraft models and serial number ranges)","Simple temporal trigger (100 hours after fixed date) with single exception clause","No internal cross-references or dependent provisions","Minimal defined terms and straightforward technical language"],"plain_english_summary":"**What this is:** This is an Airworthiness Directive (AD) — a mandatory safety order issued by the Civil Aviation Safety Authority (CASA) under Commonwealth aviation law. Think of it as a legally enforceable recall notice for aircraft.\n\n**What it requires:** Owners and operators must conduct a mandatory **inspection of the aileron control system** (the mechanical components that move the wing flaps to control the aircraft's roll) on specific Gulfstream business jets.\n\n**Who it affects:** Only Gulfstream (Grumman) G1159 and G-IV series aeroplanes with serial numbers 1 through 119, plus serial number 775.\n\n**When it must be done:** Within 100 hours of flight time after 31 August 1973, unless the work has already been completed.\n\n**Why it matters:** Defects in aileron controls can cause loss of roll authority, potentially leading to loss of aircraft control. This directive mandates compliance with Grumman Customer Bulletin No. 163 to prevent catastrophic failures."}},"importantCases":[],"_links":{"self":"/api/acts/ad-g1159-8-aileron-control-system-inspection","history":"/api/acts/ad-g1159-8-aileron-control-system-inspection/history","analysis":"/api/acts/ad-g1159-8-aileron-control-system-inspection/analysis","conflicts":"/api/acts/ad-g1159-8-aileron-control-system-inspection/conflicts","importantCases":"/api/acts/ad-g1159-8-aileron-control-system-inspection/important-cases","documents":"/api/acts/ad-g1159-8-aileron-control-system-inspection/documents"}}