{"id":"F2006B10754","name":"AD/HU 369/9 - Installation of New Vne Placard","slug":"ad-hu-369-9-installation-of-new-vne-placard","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":56201,"registerId":"commonwealth-F2006B10754-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/HU 369/9 - Installation of New Vne Placard","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)  McDonnell Douglas (Hughes) and Kawasaki 369 Series Helicopters\n\n \n\nAD/HU 369/9  Installation of New Vne Placard 4/72 Applicability:              All models with S/Nos. 0101S to 0357S, 0101M to 0213M, 0101E to 0215E. Document:               Hughes SIN No. HN-45.\n\nCompliance: Within 10 hours time in service after 11 April 1972.\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":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, time-bound safety directive from 1972 with a single, narrow purpose. There is no evidence of scope creep; it addresses one specific airworthiness issue for one aircraft type."},"complexity_factors":["Single, specific technical requirement (placard replacement)","No defined terms section","No cross-references to other legislation","Simple applicability criteria (specific serial number ranges)","Clear, unconditional compliance deadline","Extremely short document (approximately 150 words of substantive content)"],"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 specific **McDonnell Douglas (Hughes) and Kawasaki 369 series helicopters** to install a new **airspeed limit placard** (a visible warning label showing the maximum safe flying speed, called \"Vne\" — Velocity Never Exceed).\n\n**Who it affects:**\n- Owners and operators of Hughes/Kawasaki 369 helicopters with specific serial numbers (0101S to 0357S, 0101M to 0213M, and 0101E to 0215E)\n\n**What must be done:**\n- Install a new Vne placard following the manufacturer's Service Information Notice HN-45\n- Complete this within **10 hours of flight time** after 11 April 1972\n\n**Why it matters:**\n- The original placard likely showed incorrect or unsafe speed limits. Flying faster than the safe limit can cause structural damage or loss of control. This directive prevents accidents by ensuring pilots see accurate speed warnings in the cockpit."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The document sets a single, narrowly focused requirement: install a new Vne placard on specified 369-series helicopters within a defined short timeframe and to the procedures in Hughes SIN No. HN-45. There is no indication within the text supplied that the AD expands, reduces or otherwise changes its own stated scope from the original instrument; it applies only to the serial-number ranges and requirements listed."},"complexity_factors":["Narrow and specific applicability by serial-number ranges (reduces scope complexity).","Short, prescriptive compliance timeframe (10 hours TIS), which raises operational scheduling pressure but not legal complexity.","Reliance on an external manufacturer instruction (Hughes SIN No. HN-45) for the technical procedure, adding a retrieval/technical-dependency step.","Lack of technical detail in the AD text (no specification of placard content or technical justification), which shifts complexity to the referenced SIN.","Regulatory origin under Part 39 (airworthiness directive) establishes mandatory status and regulatory authority but does not add interpretative complexity in the text provided."],"plain_english_summary":"Requires installation of a new Vne placard on specified McDonnell Douglas (Hughes) and Kawasaki 369‑series helicopters (S/Ns 0101S–0357S, 0101M–0213M, 0101E–0215E) per Hughes Service Information Notice HN‑45, to be fitted within 10 hours TIS after 11 April 1972.\n\nAffects owners/operators and maintenance organizations who must obtain HN‑45, perform and pay for the work; it changes cockpit speed/limit information and the short deadline may force immediate maintenance downtime."}},"importantCases":[],"_links":{"self":"/api/acts/ad-hu-369-9-installation-of-new-vne-placard","history":"/api/acts/ad-hu-369-9-installation-of-new-vne-placard/history","analysis":"/api/acts/ad-hu-369-9-installation-of-new-vne-placard/analysis","conflicts":"/api/acts/ad-hu-369-9-installation-of-new-vne-placard/conflicts","importantCases":"/api/acts/ad-hu-369-9-installation-of-new-vne-placard/important-cases","documents":"/api/acts/ad-hu-369-9-installation-of-new-vne-placard/documents"}}