{"id":"F2008L02656","name":"AD/J4100/4 Amdt 1 - Landing Gear Drag Brace Spherical Bearing","slug":"ad-j4100-4-amdt-1-landing-gear-drag-brace-spherical-bearing","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":74693,"registerId":"commonwealth-F2008L02656-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"BAe Systems (Operations) Jetstream 4100 ","sectionType":"division","heading":"BAe Systems (Operations) Jetstream 4100 Series Aeroplanes","content":"### BAe Systems (Operations) Jetstream 4100 Series Aeroplanes\n\n| AD/J4100/4 Amdt 1 | Landing Gear Drag Brace Spherical Bearing | 8/2008 |\n| ----------------- | ----------------------------------------- | ------ |\n\n| Applicability: | Jetstream Series 4100 Aircraft, constructors numbers 41004 through 41100.                                                                                                                           |\n| -------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Action in accordance with Jetstream Alert Service Bulletin J41-A32-061 Revision 1 or later NAA approved revision.Note: UK CAA AD 003-07-97 refers.                                                  |\n| Compliance:    | As detailed in Jetstream Alert Service Bulletin J41-A32-061 Revision 1 or later NAA approved revision with a revised effective date as the effective date of this AD.                               |\n|                | This Amendment becomes effective on 31 July 2008.                                                                                                                                                   |\n| Background:    | The actions detailed in this AD are intended to ensure the structural integrity of the landing gear drag brace.This amendment is made to correct a typographical error in the background statement. |\n\n![](image.001.png)  \nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n13 June 2008","sortOrder":0},{"sectionNumber":"AD/J4100/4 Amdt 1","sectionType":"part","heading":"AD/J4100/4 Amdt 1","content":"## AD/J4100/4 Amdt 1","sortOrder":1},{"sectionNumber":"Landing Gear Drag Brace Spherical Bearin","sectionType":"part","heading":"Landing Gear Drag Brace Spherical Bearing","content":"## Landing Gear Drag Brace Spherical Bearing","sortOrder":2},{"sectionNumber":"8/2008","sectionType":"part","heading":"8/2008","content":"## 8/2008","sortOrder":3}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This amendment makes no substantive change to scope. It merely corrects a typographical error in the background statement. The original purpose — ensuring landing gear structural integrity through mandatory inspection/repair — remains unchanged."},"complexity_factors":["Very short document (approximately 200 words)","Only 1 defined term implicitly referenced (NAA - National Aviation Authority)","Single technical requirement referencing an external service bulletin","No nested conditional logic or exceptions","Minimal cross-referencing (one reference to UK CAA AD and one service bulletin)","Straightforward compliance structure with single pathway"],"plain_english_summary":"This mandatory CASA Airworthiness Directive requires operators and maintainers of Jetstream 4100 series aircraft (S/N 41004–41100) to inspect and/or repair the landing gear drag-brace spherical bearing per Jetstream Alert Service Bulletin J41-A32-061 Rev 1 (or later approved revision) to prevent landing-gear collapse.\n\nThis Amendment 1 only corrects a typographical error in the background; substantive requirements are unchanged. It takes effect 31 July 2008."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The amendment corrects a typographical error in the background statement and does not alter the AD's operative requirements, applicability, or compliance obligations. The directive still mandates action per Jetstream Alert Service Bulletin J41‑A32‑061 Revision 1 or a later NAA‑approved revision, effective 31 July 2008 (Background; Requirement; Compliance)."},"complexity_factors":["Narrow applicability limited to specific constructor numbers (Applicability)","Operational requirement delegates technical content to an external service bulletin (Requirement)","Regulatory discretion over later NAA‑approved revisions creates variable compliance paths (Requirement)","Compliance is date‑bound (effective 31 July 2008) but the AD contains no technical procedures itself (Compliance)","Amendment only corrects a typographical error in the background; technical effect is unchanged but tracking errata increases administrative overhead (Background)"],"plain_english_summary":"This AD requires operators of BAe Systems Jetstream 4100 series aircraft (constructor numbers 41004–41100) to carry out the maintenance and inspections set out in Jetstream Alert Service Bulletin J41‑A32‑061 Revision 1 (or a later NAA‑approved revision) to address the landing‑gear drag‑brace spherical bearing. It takes effect 31 July 2008.\n\nAircraft operators bear the cost and scheduling burden; the Civil Aviation Safety Authority enforces compliance and may accept later NAA‑approved revisions (Applicability; Requirement; Compliance; Background)."},"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"}},"importantCases":[],"_links":{"self":"/api/acts/ad-j4100-4-amdt-1-landing-gear-drag-brace-spherical-bearing","history":"/api/acts/ad-j4100-4-amdt-1-landing-gear-drag-brace-spherical-bearing/history","analysis":"/api/acts/ad-j4100-4-amdt-1-landing-gear-drag-brace-spherical-bearing/analysis","conflicts":"/api/acts/ad-j4100-4-amdt-1-landing-gear-drag-brace-spherical-bearing/conflicts","importantCases":"/api/acts/ad-j4100-4-amdt-1-landing-gear-drag-brace-spherical-bearing/important-cases","documents":"/api/acts/ad-j4100-4-amdt-1-landing-gear-drag-brace-spherical-bearing/documents"}}