{"id":"F2006B10251","name":"AD/GAZELLE/5 - MGB A Frame Upper Shackle Attachment Bolts - Inspection","slug":"ad-gazelle-5-mgb-a-frame-upper-shackle-attachment-bolts-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":55922,"registerId":"commonwealth-F2006B10251-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/GAZELLE/5 - MGB A Frame Upper Shackle Attachment Bolts - 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/5 MGB “A” Frame Upper Shackle Attachment Bolts - Inspection\n\n\n4/78\n\n \n\nApplicability: All models.\n\n \n\nDocument: Aerospatiale Gazelle SB No. 01.16. Compliance:  As per requirement document.\n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard, narrowly-scoped airworthiness directive. It addresses a specific technical issue (bolt inspection) on specific aircraft models. There is no evidence of scope creep — the document does exactly what ADs are designed to do: mandate a safety action with reference to manufacturer documentation."},"complexity_factors":["Extremely short document (under 150 words)","No defined terms section — relies entirely on external reference","Single operative requirement: 'Compliance: As per requirement document'","No conditional logic, exceptions, or nested provisions","Cross-reference to only one external document (Aerospatiale service bulletin)","No penalty provisions, appeal mechanisms, or administrative procedures included"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA). It requires owners and operators of **Eurocopter SA341 and SA342 Gazelle helicopters** to inspect specific bolts on the main gearbox (MGB) \"A\" frame upper shackle attachment.\n\n**What it does:**\n- Mandates inspection of critical bolts that attach the upper shackle of the \"A\" frame to the main gearbox\n- References a specific service bulletin (Aerospatiale Gazelle SB No. 01.16) that contains the detailed inspection requirements\n- Requires compliance exactly as specified in that service bulletin\n\n**Who it affects:**\n- All operators of Gazelle helicopter models (SA341 and SA342 series)\n- Maintenance organisations servicing these aircraft\n- Aircraft owners and certificate of registration holders\n\n**Why it matters:**\nMain gearbox attachment failures can cause catastrophic loss of the helicopter. This AD ensures potential defects in these critical structural bolts are detected before they cause in-flight failure. Non-compliance grounds the aircraft — it cannot legally fly until the inspection is completed."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"Based on the text provided, the directive's scope is clear and limited: it mandates inspection of the MGB \"A\"‑frame upper shackle attachment bolts for all Gazelle models and requires compliance with the referenced Aerospatiale Service Bulletin. There is no indication in the supplied text that the scope departs from this stated purpose or expands beyond the inspection requirement and the Service Bulletin's instructions."},"complexity_factors":["Narrow technical scope limited to specific MGB \"A\"‑frame upper shackle attachment bolts","Short directive text that delegates substantive inspection procedures to an external Service Bulletin (Aerospatiale Gazelle SB No. 01.16)","Broad applicability (\"All models\") increases operational variation across owners/operators","Regulatory enforcement and obligations are determined through cross‑reference to the Civil Aviation Regulations (Part 39) and the referenced technical document","Potential technical complexity in inspection methods and corrective actions that are not detailed in the AD itself"],"plain_english_summary":"This directive mandates inspection of the main gearbox (MGB) “A”‑frame upper shackle attachment bolts on Eurocopter (Aerospatiale) Gazelle helicopters (SA341/SA342), applies to all Gazelle models, and requires compliance with Aerospatiale Gazelle Service Bulletin No. 01.16. Operators/owners must arrange and pay for inspections and any corrective work; CASA issues and enforces the requirement. It raises operator costs and downtime while aiming to preserve airworthiness by following the Service Bulletin’s technical steps."}},"importantCases":[],"_links":{"self":"/api/acts/ad-gazelle-5-mgb-a-frame-upper-shackle-attachment-bolts-inspection","history":"/api/acts/ad-gazelle-5-mgb-a-frame-upper-shackle-attachment-bolts-inspection/history","analysis":"/api/acts/ad-gazelle-5-mgb-a-frame-upper-shackle-attachment-bolts-inspection/analysis","conflicts":"/api/acts/ad-gazelle-5-mgb-a-frame-upper-shackle-attachment-bolts-inspection/conflicts","importantCases":"/api/acts/ad-gazelle-5-mgb-a-frame-upper-shackle-attachment-bolts-inspection/important-cases","documents":"/api/acts/ad-gazelle-5-mgb-a-frame-upper-shackle-attachment-bolts-inspection/documents"}}