{"id":"F2006B06810","name":"AD/SD3-30/1 - Galley Urn Restraint - Modification","slug":"ad-sd3-30-1-galley-urn-restraint-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114672,"registerId":"commonwealth-F2006B06810-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/SD3-30/1 - Galley Urn Restraint - Modification","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)  Short SD3-30 Series Aeroplanes\n\n \n\nAD/SD3-30/1 Galley Urn Restraint - Modification 5/81\n\nApplicability: All models.\n\n \n\nRequirement: Install, to a scheme approved by the Secretary, a restraint system to secure the galley urn against flight and emergency alighting loads, independent of the urn compartment door.\n\n \n\nCompliance: Before initial issue or renewal of Australian Certificate of Airworthiness or within 2 months time in service after 30 April 1981 for aircraft already in service.\n\n \n\nBackground: During a First of Type Inspection it was noted that the urn was restrained only by the compartment door and this could present a hazard to the cabin attendant and passengers during an emergency landing.\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, single-issue airworthiness directive from 1981. It addresses exactly one safety concern (galley urn restraint) for exactly one aircraft type. There is no evidence of scope creep; the document remains tightly focused on its original purpose."},"complexity_factors":["Extremely short document (under 200 words)","Only 4 operative sections: Applicability, Requirement, Compliance, and Background","No defined terms section — all language is ordinary English","No cross-references to other legislation or regulations","Single, unambiguous requirement with clear deadline","No conditional logic, exceptions, or nested provisions"],"plain_english_summary":"This is an **Airworthiness Directive** — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA). It applies to all **Short SD3-30 Series Aeroplanes** (a type of regional aircraft).\n\n**What it requires:**\nAircraft owners must install an approved **restraint system** to secure the galley urn (the large coffee/tea pot used in the aircraft kitchen). The urn must be held in place by something *other than* just the compartment door — it needs its own independent strap, bracket, or locking mechanism.\n\n**Why this matters:**\nDuring a safety inspection, regulators discovered that the galley urn was only held in place by the cupboard door itself. In an emergency landing, the door could fly open and the heavy urn could become a dangerous projectile, injuring cabin crew or passengers.\n\n**When it had to be done:**\n- For new aircraft entering Australian service: before getting their airworthiness certificate\n- For aircraft already flying: within 2 months after 30 April 1981\n\n**The bottom line:**\nThis is a targeted safety fix — a simple mechanical modification to prevent a specific hazard in a specific aircraft type. It shows how aviation safety works through granular, mandatory fixes when design flaws are discovered."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive text identifies a specific safety concern discovered during inspection (urn restrained only by the compartment door) and sets a mechanical remedy (install an independent restraint meeting flight and emergency alighting loads) together with approval and timing requirements. Nothing in the text indicates an expansion or narrowing of that original corrective focus; the directive applies to all models of the series and prescribes when the change must be done, consistent with the stated inspection-origin purpose (Background, Requirement, Applicability, Compliance)."},"complexity_factors":["Performance-based requirement (restraint must secure against flight and emergency alighting loads) which requires technical demonstration rather than following a single mandated design (Requirement)","Mandatory approval by the Secretary of the proposed restraint scheme before installation (Requirement)","Multiple compliance triggers and deadlines: before initial issue/renewal of Certificate of Airworthiness or within two months time in service after 30 April 1981 for in-service aircraft (Compliance)","Applies to all SD3-30 models, widening the set of affected operators (Applicability)","Absence of specific technical standards or drawings in the text increases need for bespoke design and regulator assessment (Requirement)","Scheduling pressure for in-service aircraft due to the two-month compliance window (Compliance)"],"plain_english_summary":"### What this instrument does (mechanics)\n\n- Requires installation of a physical restraint that secures the galley urn so it will stay in place under normal flight loads and under emergency alighting loads. The restraint must be independent of the urn compartment door. (Requirement)\n- The restraint must be installed \"to a scheme approved by the Secretary\" — the operator proposes a scheme and the Secretary must approve it before installation. (Requirement)\n- Applies to all SD3-30 series aeroplanes. (Applicability)\n- Compliance timing: for aircraft not yet certificated in Australia, the work must be done before the initial issue or renewal of the Australian Certificate of Airworthiness; for aircraft already in service the installation must be completed within two months time in service after 30 April 1981. (Compliance)\n\n### Stated reason in the instrument\n\n- The background states that during a First of Type Inspection the urn was found to be restrained only by the compartment door, and that could present a hazard to cabin attendants and passengers during an emergency landing. (Background)\n\n### Who pays and who decides\n\n- Aircraft operators or owners are the parties that must install the restraint; they therefore bear the cost of design, procurement and installation. (Requirement, Compliance)\n- The Secretary (Civil Aviation Authority) decides whether a proposed restraint scheme meets the directive’s requirements and must approve the scheme before installation. (Requirement)\n\n### What the operator must deliver and when\n\n- Operators must propose a restraint scheme that achieves the specified performance outcome (secure the urn against flight and emergency alighting loads, independent of the compartment door). The Secretary approves that scheme before installation. (Requirement)\n- For in-service aircraft the two-month compliance window requires scheduling and carrying out the installation within that period. For aircraft being certificated or renewed, the work must be done before the certificate is issued or renewed. (Compliance)\n\n### Implementation and compliance practicalities (testing the stated purpose against trade-offs)\n\n- The instrument is performance-based rather than prescriptive: it specifies the outcome (secure against flight and emergency alighting loads, independent of the door) but not a single technical design. That requires operators to develop (or buy) a restraint scheme that demonstrates those outcomes. (Requirement)\n- Compliance requires the Secretary's approval of the restraint scheme before installation. This creates a defined decision point for the regulator and a pre-installation approval step for operators. (Requirement)\n- The two-month compliance window for in-service aircraft requires scheduling of installation work within that period; operators will need to plan for labour, downtime and any parts procurement during that window. (Compliance)\n- The instrument does not publish specific test standards or installation drawings in the text. Operators therefore must rely on their proposed scheme and the Secretary's assessment to show the restraint meets the stated loads. (Requirement)\n\n### Effects on private choice, competition and operational trade-offs\n\n- Operators retain freedom to select or design the restraint scheme so long as it meets the performance requirement and gains approval; independent STC/maintenance organisations can supply schemes if they satisfy the Secretary. (Requirement)\n- Costs of design, parts and installation are concentrated on operators; the safety benefit the instrument claims (reduced hazard from an unsecured urn) is the stated rationale but is not quantified in the text. (Background)\n- The performance-based approach permits multiple technical solutions, which preserves scope for suppliers and installers to compete on design and price, subject to the Secretary’s approval. (Requirement)\n\n### Summary in one sentence\n\n- Operators of SD3-30 aircraft must install a Secretary-approved restraint that secures the galley urn independently of the compartment door, meeting flight and emergency alighting load criteria, with required compliance tied to certification timing or a two-month window for in-service aircraft. (Applicability, Requirement, Compliance, Background)"}},"importantCases":[],"_links":{"self":"/api/acts/ad-sd3-30-1-galley-urn-restraint-modification","history":"/api/acts/ad-sd3-30-1-galley-urn-restraint-modification/history","analysis":"/api/acts/ad-sd3-30-1-galley-urn-restraint-modification/analysis","conflicts":"/api/acts/ad-sd3-30-1-galley-urn-restraint-modification/conflicts","importantCases":"/api/acts/ad-sd3-30-1-galley-urn-restraint-modification/important-cases","documents":"/api/acts/ad-sd3-30-1-galley-urn-restraint-modification/documents"}}