{"id":"F2006B06811","name":"AD/SD3-30/10 Amdt 1 - Fuel Fume Seal Installation - Modification","slug":"ad-sd3-30-10-amdt-1-fuel-fume-seal-installation-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114674,"registerId":"commonwealth-F2006B06811-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/SD3-30/10 Amdt 1 - Fuel Fume Seal Installation - 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/SD3-30/10\n\nAmdt 1\n\n\nFuel Fume Seal Installation - Modification 4/83\n\n \n\nApplicability: All model SD3-30 with S/Nos. SH3002 to SH3091. Document:  Shorts SB No. SD3-53-47 Parts A and B.\n\n(Modifications No. 6286 and 6339).\n\n \n\nCompliance: Accomplish within 9 months after 30 April, 1983.\n\n \n\nBackground: Amendment. 1 extends Serial Number applicability and introduces Mod. 6339.\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":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":true,"description":"The amendment (Amdt 1) expanded the set of affected aircraft by extending the serial-number applicability and introduced Modification No. 6339 in addition to the earlier modification (No. 6286). This changed which owners/operators are subject to the mandatory installation and altered the technical requirements by adding a new modification reference. (Background, Applicability)"},"complexity_factors":["Narrow applicability: single aircraft model and a contiguous serial-number range (Applicability)","Single, fixed compliance deadline (9 months after 30 April 1983) rather than staged or conditional timing (Compliance)","Dependence on an external technical document (Shorts SB No. SD3-53-47 Parts A and B) for the required work (Document)","Amendment introduced an additional modification number and expanded serial-number coverage (Background)","Technical implementation requires maintenance facilities/parts, which may vary in availability (implicit in Compliance and Document)"],"plain_english_summary":"This airworthiness directive requires owners/operators of Short SD3-30 aeroplanes (S/N SH3002–SH3091) to install a fuel-fume-seal modification per Shorts SB No. SD3-53-47 Parts A and B within nine months after 30 April 1983; costs and scheduling rest with the operator. An amendment expanded the affected serial-number range and added Modification No. 6339, changing who must comply and the work required."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a narrow, technical safety directive for a specific aircraft type. The amendment slightly expands coverage to additional serial numbers and offers an alternative modification method, but this is consistent with the original purpose of ensuring fuel fume sealing safety. No scope creep detected."},"complexity_factors":["Extremely short document (under 200 words)","Only 2 defined applicability criteria (aircraft model and serial number range)","Single compliance requirement with clear deadline","No cross-references to other legislation or regulations beyond the enabling Civil Aviation Regulations 1998","No conditional logic or exceptions","Straightforward amendment explanation (extends serial numbers, adds alternative modification)"],"plain_english_summary":"**What 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 requires:** Owners and operators of specific Short SD3-30 series aeroplanes (a type of regional aircraft) must install a \"fuel fume seal\" modification. This is a physical change to the aircraft to prevent dangerous fuel vapours from leaking into areas where they could ignite.\n\n**Who it affects:** Anyone who owns or operates Short SD3-30 aircraft with serial numbers SH3002 through SH3091.\n\n**The deadline:** The modification had to be completed within 9 months after 30 April 1983.\n\n**Why it matters:** Fuel fumes in the wrong place can cause fires or explosions. This directive fixes a known safety defect. The \"Amendment 1\" expands the original order to cover more aircraft (more serial numbers) and adds an alternative modification method (Mod. 6339) to the original fix (Mod. 6286).\n\n**Key documents referenced:** Shorts Service Bulletin SD3-53-47 Parts A and B — these are the manufacturer's technical instructions for doing the work."}},"importantCases":[],"_links":{"self":"/api/acts/ad-sd3-30-10-amdt-1-fuel-fume-seal-installation-modification","history":"/api/acts/ad-sd3-30-10-amdt-1-fuel-fume-seal-installation-modification/history","analysis":"/api/acts/ad-sd3-30-10-amdt-1-fuel-fume-seal-installation-modification/analysis","conflicts":"/api/acts/ad-sd3-30-10-amdt-1-fuel-fume-seal-installation-modification/conflicts","importantCases":"/api/acts/ad-sd3-30-10-amdt-1-fuel-fume-seal-installation-modification/important-cases","documents":"/api/acts/ad-sd3-30-10-amdt-1-fuel-fume-seal-installation-modification/documents"}}