{"id":"F2006B10043","name":"AD/G1159/4 Amdt 4 - Life Limited Components - Retirement","slug":"ad-g1159-4-amdt-4-life-limited-components-retirement","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":55466,"registerId":"commonwealth-F2006B10043-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/G1159/4 Amdt 4 - Life Limited Components - Retirement","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/G1159/4\n\nAmdt 4\n\n\nLife Limited Components - Retirement 5/95\n\n \n\nApplicability: All Model Gulfstream II (GII), Gulfstream IIB (GIIB) and Gulfstream IV (GIV) aircraft.\n\n \n\nRequirement:  Retire the components listed in Chapter 5, Section 5-4 of the GII Maintenance Manual, GIIB Maintenance Manual or GIV Maintenance Manual whichever is applicable.\n\n \n\nCompliance:  Retire components at the life limits specified in Chapter 5, Section 5-4 of the applicable Maintenance Manual. This amendment is effective 27 April 1995.\n\n \n\nBackground: This amendment is issued to include Gulfstream IV aircraft.\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":2181},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":true,"description":"This amendment expanded coverage to include Gulfstream IV aircraft, whereas previous versions of the directive only applied to Gulfstream II and IIB models."},"complexity_factors":["Delegates specific technical requirements to external aircraft Maintenance Manuals rather than stating the actual limits within the directive itself","Applies to multiple aircraft variants (GII, GIIB, GIV) that each reference different maintenance manuals","Short document with minimal defined terms but relies on cross-referenced technical documentation"],"plain_english_summary":"**What this safety rule does**\n\nThis Airworthiness Directive mandates that owners of specific Gulfstream business jets must permanently remove certain aircraft parts from service once they reach predetermined usage limits.\n\n**Who it affects**\n- Owners and operators of **Gulfstream II, Gulfstream IIB, and Gulfstream IV** aircraft\n\n**The requirements**\n- Identify \"life-limited components\" listed in **Chapter 5, Section 5-4** of the aircraft's official Maintenance Manual\n- **Retire** (permanently remove from use) these parts when they reach their specified limits — typically measured in flight hours, flight cycles, or calendar time\n- Follow the specific limits set out in the manual applicable to your particular aircraft model\n\n**Why it matters**\nThis prevents catastrophic mechanical failures by ensuring critical components are replaced before they wear out. This version expands the safety requirement to also cover Gulfstream IV aircraft, which were not included in previous versions of the directive."}},"importantCases":[],"_links":{"self":"/api/acts/ad-g1159-4-amdt-4-life-limited-components-retirement","history":"/api/acts/ad-g1159-4-amdt-4-life-limited-components-retirement/history","analysis":"/api/acts/ad-g1159-4-amdt-4-life-limited-components-retirement/analysis","conflicts":"/api/acts/ad-g1159-4-amdt-4-life-limited-components-retirement/conflicts","importantCases":"/api/acts/ad-g1159-4-amdt-4-life-limited-components-retirement/important-cases","documents":"/api/acts/ad-g1159-4-amdt-4-life-limited-components-retirement/documents"}}