{"id":"F2006B10897","name":"AD/JETSTREAM/3 - Wing/Fuselage Attachment Spigot Bush - Inspection","slug":"ad-jetstream-3-wing-fuselage-attachment-spigot-bush-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":56432,"registerId":"commonwealth-F2006B10897-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/JETSTREAM/3 - Wing/Fuselage Attachment Spigot Bush - Inspection","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)  British Aerospace BAe 3100 (Jetstream) Series Aeroplanes\n\n \n\nAD/JETSTREAM/3 Wing/Fuselage Attachment Spigot Bush - Inspection\n\n\n3/85\n\n \n\nApplicability: All models with S/Nos referenced in British Aerospace Jetstream S.B. 57-A-JA- 840917.\n\n \n\nRequirement: British Aerospace Alert Service Bulletin 57-A-JA-840917. Compliance:  As per requirement document.\n\nBackground: The manufacturer reports a case of a repair bush becoming dislodged on an aircraft in service.\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 discrete, targeted safety directive addressing a specific mechanical defect in a specific aircraft type. It has not expanded beyond its original narrow purpose of mandating inspection of the wing attachment bush."},"complexity_factors":["Extremely short document — only 8 substantive lines","Single technical requirement referencing an external document (the Service Bulletin)","No defined terms section — relies entirely on external technical documentation","No conditional logic, exceptions, or nested provisions","Simple applicability test (serial number check against manufacturer list)","Minimal cross-referencing (only to the Service Bulletin and original regulation Part 39)"],"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 as a \"recall notice\" for aircraft, but legally binding.\n\n**What it does:** It requires owners and operators of specific **British Aerospace Jetstream 3100 series aircraft** to inspect a particular part — the **wing/fuselage attachment spigot bush**. This is a metal sleeve (bush) that helps connect the wing to the main body of the plane.\n\n**Why it matters:** A repair bush had already fallen out on one aircraft in service. If this happens again, the wing could separate from the fuselage — a catastrophic failure. The directive forces operators to follow the manufacturer's specific inspection instructions (in **Service Bulletin 57-A-JA-840917**) to catch this problem before it causes an accident.\n\n**Who must comply:** Anyone operating Jetstream aircraft with serial numbers listed in the manufacturer's bulletin. They must inspect according to the manufacturer's timeline and procedures."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The AD as presented sets a targeted inspection requirement for the Jetstream serial numbers identified in the manufacturer’s service bulletin and cites a single reported dislodgement as background. There is no indication in this text that the scope deviates from that purpose: it applies to the serial numbers referenced and requires compliance with the referenced service bulletin. (Applicability; Requirement; Background)"},"complexity_factors":["Delegation to an external document (British Aerospace Alert Service Bulletin 57-A-JA-840917) for all technical detail and compliance steps","Applicability defined by serial numbers referenced only in the service bulletin rather than in the AD text","Lack of in-text specification of inspection procedures, intervals, timelines or cost responsibilities","Minimal factual content in the AD (one background incident reported) limits procedural complexity but increases reliance on external document for implementation"],"plain_english_summary":"This Airworthiness Directive from CASA mandates that owners, operators and maintenance organisations of the specified British Aerospace Jetstream serial numbers carry out the inspections and any corrective actions detailed in British Aerospace Alert Service Bulletin 57-A-JA-840917. It responds to a reported dislodgement of a repair bush at a wing/fuselage spigot and delegates technical inspection specifics to the referenced service bulletin."}},"importantCases":[],"_links":{"self":"/api/acts/ad-jetstream-3-wing-fuselage-attachment-spigot-bush-inspection","history":"/api/acts/ad-jetstream-3-wing-fuselage-attachment-spigot-bush-inspection/history","analysis":"/api/acts/ad-jetstream-3-wing-fuselage-attachment-spigot-bush-inspection/analysis","conflicts":"/api/acts/ad-jetstream-3-wing-fuselage-attachment-spigot-bush-inspection/conflicts","importantCases":"/api/acts/ad-jetstream-3-wing-fuselage-attachment-spigot-bush-inspection/important-cases","documents":"/api/acts/ad-jetstream-3-wing-fuselage-attachment-spigot-bush-inspection/documents"}}