{"id":"F2006B10909","name":"AD/JETSTREAM/40 Amdt 1 - NLG Top Cap Assembly","slug":"ad-jetstream-40-amdt-1-nlg-top-cap-assembly","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":56447,"registerId":"commonwealth-F2006B10909-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/JETSTREAM/40 Amdt 1 - NLG Top Cap Assembly","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nBritish Aerospace BAe 3100 (Jetstream) Series Aeroplanes\n\nAD/JETSTREAM/40\n\nAmdt 1\n\n  \nNLG Top Cap Assembly 11/95\n\nApplicability: Model HP137 Mk1, Jetstream Series 200 and Jetstream Series 3100 Aircraft, and Jetstream Series 3200 Aircraft with constructors numbers 790 through 854 with modification status and installed nose gear types specified in the Requirement Document.\n\nRequirement: Action in accordance with Jetstream Mandatory Service Bulletin 32-JA 901040 Revision 3.\n\nCompliance: As specified in the Requirement Document.\n\nThe Compliance of the previous issue of this Directive remains unchanged. This Amendment is effective from 12 October 1995.\n\nBackground: Subsequent to the introduction of Service Bulletins 32-JA 860331 and 32-JA 860332, a further failure of top cap bolts of the nose landing gear was reported.\n\nAmendment 1 is issued in response to the latest revision of the Requirement Document which introduces Revision 3 of the associated AP Precision Hydraulics Service Bulletin 32-41.","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"This Amendment does not change the AD's applicability or the nature of compliance obligations; it updates the Requirement Document to reference Revision 3 of the Jetstream and AP Precision Hydraulics service bulletins but leaves previous compliance unchanged (see 'Compliance' and 'Amendment 1')."},"complexity_factors":["Technical specificity: applicability limited to particular models, constructors' numbers and nose‑gear/modification statuses (Applicability).","Cross‑references: mandates compliance with Jetstream Mandatory Service Bulletin 32‑JA 901040 Rev 3 and incorporates AP Precision Hydraulics Service Bulletin 32‑41 Rev 3 (Requirement; Amendment 1).","Mandatory nature: compliance is prescribed by the Requirement Document with limited regulatory discretion (Compliance).","Operational impact: inspection/repair workload, parts and downtime costs fall on operators and maintenance organisations (Compliance; Requirement).","Document dependency: the AD delegates procedural detail to the external Requirement Document and service bulletins, requiring users to consult those texts for action and timing."],"plain_english_summary":"This amendment to an Airworthiness Directive requires operators of specified British Aerospace Jetstream models (constructors' numbers 790–854 and certain nose‑gear/mod configurations) to carry out the maintenance actions set out in Jetstream Mandatory Service Bulletin 32‑JA 901040 Revision 3 to address nose‑landing‑gear top‑cap bolt failures (Applicability; Requirement). It makes those actions mandatory for aircraft owners/operators and maintenance organisations to follow the Requirement Document on the regulator’s compliance schedule (Compliance)."},"kimi_summary":{"content_quality":"ok","complexity_score":4,"scope_assessment":{"changed":false,"description":"This amendment remains tightly scoped to its original purpose — addressing nose landing gear top cap bolt failures in specific Jetstream aircraft. The amendment simply updates the technical reference document from Revision 2 to Revision 3 of the manufacturer service bulletin. There is no expansion to other aircraft types, other landing gear components, or broader operational requirements."},"complexity_factors":["Heavy reliance on external technical documents (Service Bulletin 32-JA 901040 Revision 3 and 'Requirement Document') — the actual compliance requirements are not stated in the legislative text itself","Narrow applicability criteria requiring cross-referencing of constructor numbers, modification status, and installed gear types","Amendment structure requires readers to understand relationship between original directive, Amendment 1, and previous compliance obligations","Technical aviation terminology throughout ('NLG Top Cap Assembly', 'modification status', 'constructors numbers')","Brief length (under 200 words) but dense with conditional applicability"],"plain_english_summary":"This CASA Airworthiness Directive requires owners/operators of specified British Aerospace Jetstream aircraft to inspect and, if necessary, repair or replace the nose landing gear top cap assembly per Jetstream Mandatory Service Bulletin 32-JA 901040 Revision 3. It updates the 1995 directive after a reported bolt failure; complying prevents possible landing gear collapse and ensures affected jets meet the latest safety guidance within the bulletin’s specified timeframes."}},"importantCases":[],"_links":{"self":"/api/acts/ad-jetstream-40-amdt-1-nlg-top-cap-assembly","history":"/api/acts/ad-jetstream-40-amdt-1-nlg-top-cap-assembly/history","analysis":"/api/acts/ad-jetstream-40-amdt-1-nlg-top-cap-assembly/analysis","conflicts":"/api/acts/ad-jetstream-40-amdt-1-nlg-top-cap-assembly/conflicts","importantCases":"/api/acts/ad-jetstream-40-amdt-1-nlg-top-cap-assembly/important-cases","documents":"/api/acts/ad-jetstream-40-amdt-1-nlg-top-cap-assembly/documents"}}