{"id":"F2008L00500","name":"AD/J4100/11 - Attachment Bracket for Door Restraint Cable","slug":"ad-j4100-11-attachment-bracket-for-door-restraint-cable","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":119329,"registerId":"commonwealth-F2008L00500-current","compilationNumber":null,"startDate":"2026-04-03","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/J4100/11 | Attachment Bracket for Door Restraint Cable | 4/2008 DM |\n| ----------- | ------------------------------------------- | --------- |\n\n| Applicability: | Model Jetstream Series 4100 aircraft, constructor’s numbers 41004 through 41086.                                                                                                                                                                                                                                                                                                                                                                              |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Action in accordance with BAe Regional Aircraft Mandatory Service BulletinJ41-A53-024 Revision 1, or later CAA/EASA approved revision.Note: UK CAA AD 004-04-96 refers.                                                                                                                                                                                                                                                                                       |\n| Compliance:    | Part 1 of the Requirement document:Unless the initial inspection is already accomplished, before the accumulation of 3,000 flights or within 30 days after 20 February 2008, whichever occurs later. Inspect thereafter at intervals not to exceed 1,000 flights; until accomplishment of Part 2 of the Requirement document.Part 2 of the Requirement document:Incorporation of Modification JM41562A cancels the inspection requirements of this Directive. |\n|                | This Airworthiness Directive becomes effective on 20 February 2008.                                                                                                                                                                                                                                                                                                                                                                                           |\n| Background:    | Cracks were reported in fuselage frame 179 at the attachment bracket for the door restraint cable. The cracks have been attributed to an initial high load on the cable with continued high load use. This directive requires an inspection and cable adjustment check, repeat inspections, and closing action comprising installation of new doublers to reinforce the frame.                                                                                |\n\n![](image.001.png)  \nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n15 February 2008","sortOrder":0},{"sectionNumber":"AD/J4100/11","sectionType":"part","heading":"AD/J4100/11","content":"## AD/J4100/11","sortOrder":1},{"sectionNumber":"Attachment Bracket for Door Restraint Ca","sectionType":"part","heading":"Attachment Bracket for Door Restraint Cable","content":"## Attachment Bracket for Door Restraint Cable","sortOrder":2},{"sectionNumber":"4/2008 DM","sectionType":"part","heading":"4/2008 DM","content":"## 4/2008 DM","sortOrder":3}],"analysis":{"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This is a standard, targeted Airworthiness Directive addressing a specific safety defect in a specific aircraft type. The scope remains precisely limited to the cracked attachment bracket issue as originally identified."},"complexity_factors":["Single, specific mechanical issue (one bracket, one frame location)","Clear two-part compliance structure (temporary inspections → permanent modification)","Only 1 cross-reference to external document (BAe Service Bulletin J41-A53-024)","Simple conditional logic: 'whichever occurs later' and 'until accomplishment of Part 2'","Limited applicability (specific aircraft model and serial number range)","No nested definitions or interpretation sections","Background clearly explains the safety rationale"],"plain_english_summary":"This AD requires operators of BAe Jetstream 4100 series (S/N 41004–41086) to inspect the frame‑179 attachment bracket for the door restraint cable for cracking (initially before 3,000 flights or within 30 days of 20 Feb 2008, then every 1,000 flights) because repeated cable loads have caused cracks. Installing modification JM41562A (doublers) is the permanent fix and removes the inspection requirement. The directive prevents structural failure from undetected cracks."},"flash_summary":{"complexity_score":5,"scope_assessment":{"changed":false,"description":"The directive’s scope is consistent with its stated safety purpose: it targets a defined subset of Jetstream 4100 aircraft to detect and remedy cracks at frame 179. The instrument does not indicate any broadening or narrowing of scope beyond the corrective inspections and the terminating modification described in the text."},"complexity_factors":["Narrow applicability limited to constructor’s numbers 41004–41086 (fleet subset).","Two-stage compliance: an initial deadline (before 3,000 flights or within 30 days after 20 Feb 2008) and repeat inspections every 1,000 flights until a terminating modification is installed (Part 1 and Part 2 dependency).","Relies on an external technical document (BAe Mandatory Service Bulletin J41‑A53‑024 Revision 1 or later) and requires CAA/EASA-approved revisions, creating delegated technical detail and approval dependence.","Termination of inspection obligations only after incorporation of Modification JM41562A (requires scheduled modification work and parts).","Cross-reference to UK CAA AD 004‑04‑96 introduces additional regulatory alignment considerations.","Operational impacts on operators: added inspection workload, potential aircraft downtime, and modification costs."],"plain_english_summary":"Requires specified Jetstream 4100 aeroplanes (constructor’s numbers 41004–41086) to inspect and adjust the door restraint cable attachment bracket per BAe Mandatory Service Bulletin J41‑A53‑024, initially before 3,000 flights or within 30 days after 20 Feb 2008 and then every 1,000 flights until Modification JM41562A is installed. The directive responds to reported cracks at fuselage frame 179; aircraft operators must carry out inspections and the reinforcing modification, bearing the operational and maintenance costs and scheduling impacts."}},"importantCases":[],"_links":{"self":"/api/acts/ad-j4100-11-attachment-bracket-for-door-restraint-cable","history":"/api/acts/ad-j4100-11-attachment-bracket-for-door-restraint-cable/history","analysis":"/api/acts/ad-j4100-11-attachment-bracket-for-door-restraint-cable/analysis","conflicts":"/api/acts/ad-j4100-11-attachment-bracket-for-door-restraint-cable/conflicts","importantCases":"/api/acts/ad-j4100-11-attachment-bracket-for-door-restraint-cable/important-cases","documents":"/api/acts/ad-j4100-11-attachment-bracket-for-door-restraint-cable/documents"}}