{"id":"F2006B03214","name":"AD/B747/32 Amdt 1 - Wing Landing Gear Jury Strut Spindle","slug":"ad-b747-32-amdt-1-wing-landing-gear-jury-strut-spindle","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42586,"registerId":"commonwealth-F2006B03214-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/B747/32 Amdt 1 - Wing Landing Gear Jury Strut Spindle","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)  Boeing 747 Series Aeroplanes\n\n \n\nAD/B747/32\n\nAmdt 1\n\n\nWing Landing Gear Jury Strut Spindle 13/89\n\n \n\nApplicability: All model B747 aeroplanes listed in Boeing SB 747-32-2261R2. Requirement:  Action in accordance with Boeing S.B. 747-32-2261R2.\n\nNote: FAA AD 83-05-09 Amdt. 39-4585 refers.\n\n \n\nCompliance: As per requirement document until modification in accordance with Boeing SB 747- 32-2261R2.\n\n \n\nBackground: The manufacturer reports two cases of wing landing gear jury strut spindle failures.\n\nAmendment 1 references Revision 2 to the Requirement Document.\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":5,"scope_assessment":{"changed":true,"description":"Amendment 1 updates the AD to reference Revision 2 of the Boeing Service Bulletin as the operative requirement document (Amendment 1; Requirement). The AD’s applicability remains tied to the models listed in that SB (Applicability), but the technical instructions operators must follow have changed from the earlier SB version to Revision 2. The change is therefore a modification to the required corrective action document rather than an expansion or narrowing of which aircraft are subject to the AD."},"complexity_factors":["Dependence on an external technical document (Boeing SB 747-32-2261R2) for the mandatory actions (Requirement; Applicability).","Amendment updating the Requirement Document to a later revision (Revision 2), requiring operators to track and apply the revised SB (Amendment 1).","Applicability is limited to models listed in the SB rather than being described in full within the AD, requiring cross-referencing (Applicability).","The AD references an FAA AD, creating a cross-jurisdictional compliance consideration for some operators (Note).","The AD text does not specify explicit compliance timeframes or granular procedural steps; those are in the Boeing SB, increasing operational planning complexity (Compliance).","The safety problem is specific (two reported spindle failures) but the technical remedy and its implementation burden depend on the SB’s content and availability of parts/skills (Background; Requirement)."],"plain_english_summary":"This AD, issued by CASA, mandates operators of the Boeing 747 models listed in Boeing SB 747-32-2261R2 to perform the SB’s required inspections/modifications of the wing landing‑gear jury strut spindle to address two reported spindle failures. It matters because operators must absorb the costs, follow the manufacturer’s procedures until the modification is done, and coordinate with related FAA requirements."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a narrow, technical safety directive focused on a single aircraft component. Amendment 1 merely updates the reference to the latest version of the manufacturer's service bulletin — it does not expand the scope beyond the original safety concern about jury strut spindle failures."},"complexity_factors":["Extremely short document (approximately 150 words)","Only 1 defined term implicitly referenced (the Boeing service bulletin)","No nested conditional logic or exceptions","Single straightforward compliance pathway","No cross-references to other legislation beyond a note about a related FAA directive","Technical content is entirely delegated to an external Boeing document"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA).\n\n**What it does:**\nIt requires owners and operators of certain **Boeing 747 aircraft** to inspect and potentially repair a specific part called the **\"wing landing gear jury strut spindle.\"** This is a structural component that helps support the aircraft's wing landing gear.\n\n**Why it matters:**\nThe manufacturer (Boeing) reported **two cases where this spindle failed**. If this part breaks, it could compromise the landing gear's integrity — potentially leading to dangerous situations during landing or ground operations.\n\n**Who must comply:**\nAnyone operating Boeing 747 models listed in Boeing Service Bulletin 747-32-2261 Revision 2. The directive tells them to follow the instructions in that Boeing document.\n\n**What action is required:**\nOperators must complete the inspections and any necessary repairs according to the Boeing service bulletin until a permanent modification is installed.\n\n**Key point:** This is **Amendment 1**, which simply updates the directive to reference a newer version (Revision 2) of the Boeing service bulletin that contains the technical instructions."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b747-32-amdt-1-wing-landing-gear-jury-strut-spindle","history":"/api/acts/ad-b747-32-amdt-1-wing-landing-gear-jury-strut-spindle/history","analysis":"/api/acts/ad-b747-32-amdt-1-wing-landing-gear-jury-strut-spindle/analysis","conflicts":"/api/acts/ad-b747-32-amdt-1-wing-landing-gear-jury-strut-spindle/conflicts","importantCases":"/api/acts/ad-b747-32-amdt-1-wing-landing-gear-jury-strut-spindle/important-cases","documents":"/api/acts/ad-b747-32-amdt-1-wing-landing-gear-jury-strut-spindle/documents"}}