{"id":"F2006B06858","name":"AD/SD3-60/15 Amdt 1 - Fuselage Sealing","slug":"ad-sd3-60-15-amdt-1-fuselage-sealing","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114736,"registerId":"commonwealth-F2006B06858-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/SD3-60/15 Amdt 1 - Fuselage Sealing","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 SD3-60 Series Aeroplanes\n\n \n\nAD/SD3-60/15\n\nAmdt 1\n\n\nFuselage Sealing 8/86\n\n \n\nApplicability: All models with S/Nos SH3601 to SH3678.\n\n \n\nRequirement: Action in accordance with Shorts SB360-53-22, Revision 1. Compliance:  Prior to 31 September 1986.\n\nBackground: This AD has been amended to include S.B. 360-53-22 Revision 1 to compliance document, which adds to the positions requiring sealing.\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":3,"scope_assessment":{"changed":true,"description":"Yes. The AD has been amended to reference Shorts SB360-53-22, Revision 1 as the compliance document. The Background explicitly states that Revision 1 \"adds to the positions requiring sealing,\" which expands the set of fuselage locations subject to mandatory sealing compared with the earlier requirement. (See: Background; Requirement)."},"complexity_factors":["Narrow applicability (specific serial numbers SH3601 to SH3678) reduces scope of affected parties (Applicability).","Single mandated action tied to an external document (Shorts SB360-53-22, Revision 1) concentrates complexity in accessing and following the service bulletin (Requirement).","Fixed compliance deadline requires scheduling and resource allocation by operators (Compliance).","Amendment changes the referenced compliance document by adding positions requiring sealing, which requires operators to compare revisions to determine additional tasks (Background).","Low regulatory discretion in method of compliance because the AD mandates action \"in accordance with\" the specified service bulletin (Requirement)."],"plain_english_summary":"This AD mandates that owners/operators of Short SD3-60 aeroplanes (serials SH3601–SH3678) carry out fuselage sealing exactly as set out in Shorts SB360‑53‑22, Revision 1, by the stated compliance date. The amendment adopts the revised service bulletin because it adds sealing positions, expanding the work scope; affected operators are responsible for arranging and paying for the required maintenance."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a minor amendment to an existing Airworthiness Directive. The Background section explicitly states the amendment simply incorporates a revised service bulletin that 'adds to the positions requiring sealing.' The scope remains identical (same aircraft models, same basic safety purpose) — only the technical specifications expanded slightly to cover additional sealing locations. This is a routine technical update, not a scope expansion."},"complexity_factors":["Extremely short document (under 200 words)","Only 4 substantive sections: Applicability, Requirement, Compliance, and Background","Single cross-reference to one external technical document (Shorts SB360-53-22)","No defined terms section","No conditional logic or nested exceptions","Straightforward command structure: identify aircraft → apply bulletin → meet deadline"],"plain_english_summary":"**What this is:** This is an **Airworthiness Directive (AD)** — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA). Think of it like a recall notice for aircraft, but legally binding.\n\n**What it does:** It requires owners and operators of specific **Short SD3-60 Series aeroplanes** (small regional aircraft) to seal certain parts of the fuselage (the main body of the plane) to prevent leaks or structural issues.\n\n**Who it affects:** Anyone who owns or operates Short SD3-60 aircraft with serial numbers SH3601 through SH3678.\n\n**What must be done:** Operators must follow the instructions in **Shorts Service Bulletin 360-53-22, Revision 1** — a technical document from the manufacturer detailing exactly where and how to apply the sealing. This amended version (Amendment 1) expands the number of locations on the aircraft that need sealing compared to the original directive.\n\n**Deadline:** The work had to be completed before **31 September 1986** (note: this appears to be a typographical error in the original, as September only has 30 days — likely intended to be 30 September 1986).\n\n**Why it matters:** Proper fuselage sealing prevents moisture ingress, which can cause corrosion or damage to the aircraft structure over time. This is critical for maintaining airworthiness and flight safety."}},"importantCases":[],"_links":{"self":"/api/acts/ad-sd3-60-15-amdt-1-fuselage-sealing","history":"/api/acts/ad-sd3-60-15-amdt-1-fuselage-sealing/history","analysis":"/api/acts/ad-sd3-60-15-amdt-1-fuselage-sealing/analysis","conflicts":"/api/acts/ad-sd3-60-15-amdt-1-fuselage-sealing/conflicts","importantCases":"/api/acts/ad-sd3-60-15-amdt-1-fuselage-sealing/important-cases","documents":"/api/acts/ad-sd3-60-15-amdt-1-fuselage-sealing/documents"}}