{"id":"F2006B06790","name":"AD/SC7/15C - Inner Flap - Replacement of Lifed Items and Modification of Flap Structure","slug":"ad-sc7-15c-inner-flap-replacement-of-lifed-items-and-modification-of-flap-structure","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114642,"registerId":"commonwealth-F2006B06790-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/SC7/15C - Inner Flap - Replacement of Lifed Items and Modification of Flap Structure","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 SC7 (Skyvan) Series Aeroplanes\n\n \n\n# AD/SC7/15C Inner Flap - Replacement of Lifed Items\n\nand Modification of Flap Structure\n\nApplicability: All Skyvan series 3, 3A and 3M. Document:  Short Alert SB No. 57-A61, Rev. 3. Compliance:               As detailed in the requirement document.\n\n# 7/80\n\nBackground:  This Directive has been amended to reflect the revision status of the Alert Service Bulletin.\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 standard, narrow airworthiness directive focused on specific maintenance actions for a specific aircraft type. The amendment from previous versions (indicated by the \"C\" suffix) appears limited to updating the reference to the latest revision of the manufacturer's service bulletin (Rev. 3), which is typical maintenance of aviation safety documentation rather than scope expansion."},"complexity_factors":["Extremely short document (approximately 150 words)","No defined terms section—relies entirely on external reference to manufacturer service bulletin","No conditional logic or nested exceptions within the directive itself","Single, clear applicability clause (all Skyvan series 3, 3A and 3M)","Compliance requirement is delegated entirely to external document (Short Alert SB No. 57-A61, Rev. 3)","Minimal cross-referencing—only references the Civil Aviation Regulations 1998 Part 39 in header and one external service bulletin"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** issued by Australia's Civil Aviation Safety Authority (CASA) for a specific type of aircraft called the **Short SC7 Skyvan** (a small twin-turboprop utility plane).\n\n**What it does:**\n- Requires owners and operators of all Skyvan Series 3, 3A, and 3M aircraft to replace certain parts that have reached their \"life limit\" (parts that must be retired after a set number of flight hours or cycles for safety reasons)\n- Also requires a structural modification to the aircraft's inner flap (a control surface on the wing)\n\n**Who must follow it:**\n- Anyone who owns or operates a Short SC7 Skyvan Series 3, 3A, or 3M aircraft in Australia\n\n**Why it matters:**\n- This is a **mandatory safety order**. Compliance isn't optional—it's legally required to keep the aircraft airworthy (legal to fly)\n- The directive references a manufacturer's service bulletin (Short Alert SB No. 57-A61, Revision 3) which contains the detailed technical instructions\n- The \"C\" in \"AD/SC7/15C\" indicates this is the third version of this directive, updated to match the latest revision of the manufacturer's safety bulletin\n\n**Key point:** Aircraft operators must complete the specified maintenance actions according to the timeline in the referenced service bulletin to remain compliant with Australian aviation law."},"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":false,"description":"The Directive text shown states it \"has been amended to reflect the revision status of the Alert Service Bulletin.\" (Background). The amendment noted is administrative—updating the AD to reference the current revision of the service bulletin—rather than a described change to the population of affected aircraft or to the nature of the mandatory work. Applicability remains all Skyvan series 3, 3A and 3M and compliance remains \"as detailed in the requirement document.\" (Applicability; Document; Compliance)"},"complexity_factors":["Dependency on an external technical document (Short Alert SB No. 57-A61 Rev. 3) for all procedural detail rather than including procedures in the AD text (Document; Compliance).","Technical nature of required work (replacement of lifed items and structural modification) which typically requires specialised maintenance facilities and trained personnel (title).","Regulatory placement under Part 39 (airworthiness directives) creates mandatory compliance obligations and enforcement context (header).","Amendment tied to service bulletin revision status means future revisions to the SB may require administrative tracking and possible further AD updates (Background).","Limited information in the AD about timing, costs, or approval of organisations performing the work increases implementation uncertainty for operators (Compliance)."],"plain_english_summary":"This airworthiness directive mandates replacement of time‑limited components and a structural modification to the inner flap on all Short Skyvan series 3, 3A and 3M aircraft, as required by Short Alert Service Bulletin No. 57‑A61 Rev. 3. Owners/operators must arrange and fund the work and follow the service bulletin’s procedures to achieve regulatory compliance."}},"importantCases":[],"_links":{"self":"/api/acts/ad-sc7-15c-inner-flap-replacement-of-lifed-items-and-modification-of-flap-structure","history":"/api/acts/ad-sc7-15c-inner-flap-replacement-of-lifed-items-and-modification-of-flap-structure/history","analysis":"/api/acts/ad-sc7-15c-inner-flap-replacement-of-lifed-items-and-modification-of-flap-structure/analysis","conflicts":"/api/acts/ad-sc7-15c-inner-flap-replacement-of-lifed-items-and-modification-of-flap-structure/conflicts","importantCases":"/api/acts/ad-sc7-15c-inner-flap-replacement-of-lifed-items-and-modification-of-flap-structure/important-cases","documents":"/api/acts/ad-sc7-15c-inner-flap-replacement-of-lifed-items-and-modification-of-flap-structure/documents"}}