{"id":"F2006B10878","name":"AD/JETSTREAM/10 - Wing Fuel Tank Access Panels","slug":"ad-jetstream-10-wing-fuel-tank-access-panels","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":56396,"registerId":"commonwealth-F2006B10878-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/JETSTREAM/10 - Wing Fuel Tank Access Panels","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/10 Wing Fuel Tank Access Panels 11/85\n\nApplicability: HP 137 Mk 1, Jetstream Series 200 aircraft and Jetstream Series 3100 aircraft constructors number 601 to 637 inclusive.\n\n \n\nRequirement:  British Aerospace Service Bulletin 57-JM5232. Compliance: As per Requirement Document.\n\nBackground: The manufacturer has found evidence of the presence of feather edges at the countersink holes into the wing skin. This AD introduces an inspection at all wing access panel locations to check for feather edges and indications of cracks at the wing skin holes.\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 focused on a specific airworthiness issue (wing fuel tank access panel defects) for a narrow class of aircraft. It has not expanded beyond its original technical safety purpose."},"complexity_factors":["Very short document (approximately 150 words)","Only 3 defined applicability categories (specific aircraft models/serial numbers)","Single requirement referencing an external technical document (Service Bulletin)","No nested exceptions or conditional logic","No cross-references to other legislation or regulations beyond the enabling authority (Civil Aviation Regulations 1998, Part 39)","Straightforward compliance mechanism ('As per Requirement Document')"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) for specific aircraft.\n\n**What it does:**\nOrders owners and operators of certain British Aerospace Jetstream aircraft to inspect the wing fuel tank access panels for dangerous defects.\n\n**Who it affects:**\n- Owners and operators of:\n  - HP 137 Mk 1 aircraft\n  - Jetstream Series 200 aircraft  \n  - Jetstream Series 3100 aircraft with serial numbers 601 through 637\n\n**The safety problem:**\nThe manufacturer discovered \"feather edges\" (sharp, thin edges left after drilling countersunk holes) at holes in the wing skin. These can lead to **fatigue cracks** — tiny fractures that grow over time and could eventually cause structural failure.\n\n**What must be done:**\nOperators must follow **British Aerospace Service Bulletin 57-JM5232** — a technical instruction from the manufacturer detailing exactly how to inspect these panels and what to do if cracks are found.\n\n**Why it matters:**\nWing fuel tanks are critical structures. Cracks in the wing skin near fuel tanks create dual risks: structural failure and potential fuel leaks/fire. This AD prevents catastrophic accidents by catching defects early."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The AD limits its effect to inspection requirements for specified Jetstream aircraft and refers to the manufacturer’s service bulletin for implementation. The instrument’s text and stated background indicate the scope is to detect feather edges and cracks at wing skin holes for the listed aircraft; there is no language in the AD text suggesting an expansion or contraction of that scope from its stated purpose."},"complexity_factors":["Narrow applicability to a specific set of airframes by constructor number reduces legal scope and stakeholder variety. (Applicability)","Primary action is a single technical requirement—inspection for feather edges and cracks—so substantive legal detail in the AD itself is limited. (Background)","The AD delegates procedure and timing to an external document (British Aerospace Service Bulletin 57-JM5232), increasing reliance on another document for compliance details. (Requirement)","No remedial actions, alternative compliance methods, or enforcement details are set out in the AD text, which can create administrative follow-up outside the AD. (Requirement)","Technical inspection work may require specialist maintenance capability, implying practical execution complexity despite simple regulatory wording. (Background)"],"plain_english_summary":"This AD requires owners/operators of British Aerospace Jetstream HP 137 Mk 1, Series 200 and Series 3100 airplanes (constructor numbers 601–637) to inspect wing skin around fuel tank access panels for feathered countersink edges and cracking, following British Aerospace Service Bulletin 57‑JM5232. Compliance procedures and timing are dictated by that service bulletin; operators bear the cost and must carry out any required repairs."}},"importantCases":[],"_links":{"self":"/api/acts/ad-jetstream-10-wing-fuel-tank-access-panels","history":"/api/acts/ad-jetstream-10-wing-fuel-tank-access-panels/history","analysis":"/api/acts/ad-jetstream-10-wing-fuel-tank-access-panels/analysis","conflicts":"/api/acts/ad-jetstream-10-wing-fuel-tank-access-panels/conflicts","importantCases":"/api/acts/ad-jetstream-10-wing-fuel-tank-access-panels/important-cases","documents":"/api/acts/ad-jetstream-10-wing-fuel-tank-access-panels/documents"}}