{"id":"F2006B06826","name":"AD/SD3-30/25 - Airworthiness Limitations","slug":"ad-sd3-30-25-airworthiness-limitations","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114690,"registerId":"commonwealth-F2006B06826-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/SD3-30/25 - Airworthiness Limitations","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/SD3-30/25 Airworthiness Limitations 8/89\n\nApplicability: All models.\n\n \n\nRequirement: The approved system of maintenance of all SD3-30 aeroplanes shall include all relevant inspections and life limitations in the Shorts SD3-30 Maintenance Programme, Revision 17 dated 23 November 1987.\n\n \n\nCompliance: Forthwith.\n\n \n\nBackground:  This Directive has been raised to formally promulgate the Airworthiness limitations inspections and life limitations, which had been previously overlooked. The Maintenance Programme is a separate document but which forms Chapter 5 of the Maintenance Manual.\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":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive formalises and requires inclusion of airworthiness limitation inspections and life limitations that had been previously overlooked. It does not expand the population of affected aircraft (still all SD3-30 models) nor change the content of the referenced Maintenance Programme; it compels that the Programme’s items be included in the approved maintenance system (Requirement; Applicability; Background)."},"complexity_factors":["Direct, single substantive requirement: include inspections and life limits from a specified Maintenance Programme (Requirement).","Applies universally to all SD3-30 models, no model-specific variants to interpret (Applicability).","Immediate compliance required, creating scheduling pressure but not further procedural complexity (Compliance).","Relies on an external document (Shorts SD3-30 Maintenance Programme, Revision 17 dated 23 Nov 1987) which implementers must obtain and interpret (Background).","Does not set out the detailed inspections or limits in the directive itself, requiring cross-referencing to the Maintenance Programme."],"plain_english_summary":"This directive requires holders of the approved maintenance system for all Shorts SD3‑30 aeroplanes to immediately incorporate the inspections and life‑limits from the Shorts SD3‑30 Maintenance Programme (Revision 17, 23 Nov 1987) into their approved maintenance programmes.\n\nIt matters because those airworthiness limitations were previously overlooked, so operators must promptly amend documentation, schedule and perform the listed inspections, and manage life‑limited parts using the separate Chapter 5 Maintenance Programme."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard, narrow Airworthiness Directive with a single, specific purpose: to mandate incorporation of a particular maintenance manual revision for one aircraft type. It has not expanded beyond its original safety intent."},"complexity_factors":["Very short document (approximately 150 words of substantive content)","Only 4 defined structural elements: Applicability, Requirement, Compliance, and Background","No cross-references to other legislation or regulations beyond the parent Civil Aviation Regulations 1998","Single, unambiguous mandatory action with no exceptions or conditional logic","No nested definitions or interpretive provisions","Straightforward temporal compliance ('forthwith' = immediately)"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) for aircraft.\n\n**What it does:**\nIt requires all owners and operators of **Short SD3-30 series aeroplanes** (a type of regional turboprop aircraft) to immediately update their maintenance systems. Specifically, they must incorporate specific inspection schedules and \"life limitations\" (maximum usage limits before parts must be replaced or overhauled) from a particular version of the manufacturer's maintenance manual (Revision 17, dated November 1987).\n\n**Who it affects:**\n- Anyone who owns, operates, or maintains Short SD3-30 aircraft in Australia\n- Maintenance organisations servicing these aircraft\n\n**Why it matters:**\nThe directive fixes a safety gap. The required inspections and life limits had been \"overlooked\" — meaning aircraft were potentially flying without proper mandatory maintenance checks. This ensures these older aircraft meet safety standards by formally requiring specific maintenance procedures that were previously missing from official records. The compliance is immediate (\"forthwith\"), indicating urgency.\n\n**Key terms explained:**\n- **Airworthiness Directive (AD):** A legally enforceable safety order requiring specific action on aircraft\n- **Life limitations:** Maximum flying hours, cycles, or calendar time before a component must be replaced or inspected\n- **Maintenance Programme:** The formal schedule of what maintenance must be done and when"}},"importantCases":[],"_links":{"self":"/api/acts/ad-sd3-30-25-airworthiness-limitations","history":"/api/acts/ad-sd3-30-25-airworthiness-limitations/history","analysis":"/api/acts/ad-sd3-30-25-airworthiness-limitations/analysis","conflicts":"/api/acts/ad-sd3-30-25-airworthiness-limitations/conflicts","importantCases":"/api/acts/ad-sd3-30-25-airworthiness-limitations/important-cases","documents":"/api/acts/ad-sd3-30-25-airworthiness-limitations/documents"}}