{"id":"F2006B10045","name":"AD/G1159/41 - Engine Fire Extinguisher Bottle Electrical Connections","slug":"ad-g1159-41-engine-fire-extinguisher-bottle-electrical-connections","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":55472,"registerId":"commonwealth-F2006B10045-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# ![](image.001.png)  \nAIRWORTHINESS DIRECTIVE\n\nFor the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.\n\n![](image.001.png)\n\nGulfstream (Grumman) G1159 and G-IV Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/G1159/41 Engine Fire Extinguisher Bot","sectionType":"part","heading":"AD/G1159/41 Engine Fire Extinguisher Bottle Electrical Connections","content":"# AD/G1159/41 Engine Fire Extinguisher Bottle Electrical Connections\n\n  \n2/2002","sortOrder":1}],"analysis":{"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":false,"description":"Based on the extract provided, the AD’s scope is stated as applying to Gulfstream (Grumman) G1159 and G‑IV series aeroplanes and requires corrective action to address an unsafe condition as set out in the AD’s Requirement section. There is no indication in the supplied text that the AD’s scope deviates from its stated intent."},"complexity_factors":["Narrow technical scope limited to specific aircraft models (G1159 and G‑IV) — reduces breadth but requires technical knowledge","Delegated regulatory discretion under subregulation 39.1(1) of CAR 1998 — decisions about required action are made by CASA delegate","Key technical requirements and timeframes are located in separate Requirement and Compliance sections which are not included in this extract","Mandatory compliance creates operational, scheduling and cost implications for owners/operators and maintenance providers","Potential need to interpret whether alternative methods of compliance are permitted (not specified in extract)"],"plain_english_summary":"This Airworthiness Directive (AD/G1159/41), issued by a CASA delegate under subregulation 39.1(1) of the Civil Aviation Regulations 1998, mandates corrective action for an identified unsafe condition affecting engine fire extinguisher bottle electrical connections on Gulfstream (Grumman) G1159 and G‑IV series aeroplanes. It creates a binding compliance obligation for owners/operators and maintenance organisations until the defect is corrected; operators bear the cost and must schedule the required work per the AD’s Requirement and Compliance sections."},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope. It targets a specific safety issue (fire extinguisher electrical connections) on specific Gulfstream aircraft models. There is no evidence of scope creep; it remains a targeted technical safety directive rather than expanding into broader operational or regulatory matters."},"complexity_factors":["Single, highly specific technical subject matter (one aircraft system on specific models)","Short document structure with standard AD format (applicability, requirement, compliance sections)","No complex cross-referencing to other legislation — operates under clear regulatory authority (CAR 1998, subregulation 39.1(1))","Limited defined terms (relies on standard aviation terminology)","Straightforward conditional logic: if you operate this aircraft type, you must comply","Technical complexity exists in the engineering requirements (which are aircraft-specific) but the legal instrument itself is simple"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order issued by the Civil Aviation Safety Authority (CASA) for aircraft.\n\n**What it does:**\nThis directive requires owners and operators of specific Gulfstream business jets (the G1159 and G-IV series) to take corrective action on the **electrical connections for engine fire extinguisher bottles**.\n\n**Why it matters:**\nFire extinguisher bottles are critical safety equipment. If their electrical connections are faulty, the system might fail to deploy during an engine fire — a potentially catastrophic situation. This AD addresses an identified unsafe condition before it causes an accident.\n\n**Who it affects:**\n- Owners and operators of Gulfstream G1159 and G-IV series aircraft\n- Maintenance organisations servicing these aircraft\n\n**What must happen:**\nThe directive mandates specific actions (inspections, modifications, or replacements — exact details would be in the \"requirement\" and \"compliance\" sections referenced but not fully shown here) to ensure the electrical connections are safe and reliable.\n\n**Key point:** Compliance is **mandatory**, not optional. Failing to follow an AD can ground an aircraft."}},"importantCases":[],"_links":{"self":"/api/acts/ad-g1159-41-engine-fire-extinguisher-bottle-electrical-connections","history":"/api/acts/ad-g1159-41-engine-fire-extinguisher-bottle-electrical-connections/history","analysis":"/api/acts/ad-g1159-41-engine-fire-extinguisher-bottle-electrical-connections/analysis","conflicts":"/api/acts/ad-g1159-41-engine-fire-extinguisher-bottle-electrical-connections/conflicts","importantCases":"/api/acts/ad-g1159-41-engine-fire-extinguisher-bottle-electrical-connections/important-cases","documents":"/api/acts/ad-g1159-41-engine-fire-extinguisher-bottle-electrical-connections/documents"}}