{"id":"F2006B10252","name":"AD/GAZELLE/6 - Low Temperature Operations - Firewheel Inspection","slug":"ad-gazelle-6-low-temperature-operations-firewheel-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":55923,"registerId":"commonwealth-F2006B10252-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/GAZELLE/6 - Low Temperature Operations - Firewheel 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)  Eurocopter SA341 and SA342 (Gazelle) Series Helicopters\n\n \n\nAD/GAZELLE/6  Low Temperature Operations - Firewheel Inspection\n\n\n9/78\n\n \n\nApplicability: All models SA-341 and SA-342 not modified in accordance with AMS 07.9537.S.494 and AMS 07.9538.S.499 (SB No. 65.14).\n\n \n\nDocument: Aerospatiale Gazelle Sb No. 05.16. Compliance: In accordance with the requirement document.\n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This appears to be a complete, standalone Airworthiness Directive with a narrow, specific scope (low temperature firewheel inspection for unmodified Gazelles). There is no indication of scope creep; it addresses exactly what the title describes."},"complexity_factors":["Very short document (approximately 150 words)","Only 2 defined applicability criteria (aircraft models and modification exclusions)","Single cross-reference to manufacturer service bulletin SB No. 05.16","No nested conditional logic or exceptions","Straightforward compliance requirement ('in accordance with the requirement document')","No interpretation section or defined terms"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order — issued by Australia's Civil Aviation Safety Authority (CASA) for specific Eurocopter Gazelle helicopters.\n\n**What it does:**\n- Requires owners and operators of SA-341 and SA-342 Gazelle helicopters to inspect the \"firewheel\" (a component in the helicopter's engine or transmission system) when operating in **low temperatures**.\n- The directive references a specific manufacturer service bulletin (SB No. 05.16) that contains the detailed inspection procedures.\n\n**Who it affects:**\n- Operators of Eurocopter SA-341 and SA-342 Gazelle helicopters that **haven't** been modified according to two specific modification standards (AMS 07.9537.S.494 and AMS 07.9538.S.499, also known as Service Bulletin 65.14).\n\n**Why it matters:**\n- Cold weather can cause materials to contract or become brittle, potentially leading to cracks or failures in critical components. The firewheel inspection prevents catastrophic mechanical failures that could cause accidents.\n- Compliance is **mandatory** — operators must follow the manufacturer's service bulletin to keep their aircraft legally airworthy.\n\n**Key point:** This is a targeted safety fix for a specific cold-weather vulnerability in unmodified Gazelles, piggybacking on manufacturer guidance to ensure safe operation."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The text provided does not indicate any change to the directive's scope from an earlier version. The AD applies to all SA-341 and SA-342 helicopters except those modified in accordance with the two named AMS modifications (Applicability), and it requires compliance with the referenced Aerospatiale service bulletin (Document). No amendment history or superseding language is present in the supplied text."},"complexity_factors":["Short, single-issue directive with a clear applicability clause (SA-341 and SA-342 not modified by named AMS mods).","Key technical content is delegated to an external service bulletin (Aerospatiale Gazelle Sb No. 05.16), requiring cross-reference to understand exact procedures.","Compliance language is concise but leaves little internal discretion—operators must follow the referenced document.","Reference to two AMS modification numbers (AMS 07.9537.S.494 and AMS 07.9538.S.499) requires verification of modification status in records.","No alternative compliance pathways or explanatory rationale included in the text provided, increasing reliance on the external document for full interpretation."],"plain_english_summary":"Airworthiness Directive AD/GAZELLE/6 (9/78) mandates firewheel inspections for Eurocopter/Aerospatiale Gazelle SA‑341 and SA‑342 helicopters, to be carried out in accordance with Aerospatiale Service Bulletin No. 05.16. Issued under the Commonwealth civil aviation framework, it affects owners/operators who must arrange and fund inspections and any corrective work, but exempts helicopters already modified per the two AMS references. The AD delegates technical detail to the referenced service bulletin."}},"importantCases":[],"_links":{"self":"/api/acts/ad-gazelle-6-low-temperature-operations-firewheel-inspection","history":"/api/acts/ad-gazelle-6-low-temperature-operations-firewheel-inspection/history","analysis":"/api/acts/ad-gazelle-6-low-temperature-operations-firewheel-inspection/analysis","conflicts":"/api/acts/ad-gazelle-6-low-temperature-operations-firewheel-inspection/conflicts","importantCases":"/api/acts/ad-gazelle-6-low-temperature-operations-firewheel-inspection/important-cases","documents":"/api/acts/ad-gazelle-6-low-temperature-operations-firewheel-inspection/documents"}}