{"id":"F2006L00699","name":"AD/DO 228/8 - Main Wheel/Brake Assembly","slug":"ad-do-228-8-main-wheel-brake-assembly","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":136717,"registerId":"commonwealth-F2006L00699-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Dornier 228 Series Aeroplanes","sectionType":"division","heading":"Dornier 228 Series Aeroplanes","content":"### Dornier 228 Series Aeroplanes\n\n| AD/DO 228/8 | Main Wheel/Brake Assembly | 4/2006 |\n| ----------- | ------------------------- | ------ |\n\n| Applicability: | Model 228-100, -101, and 228-200, -201 aircraft, all serial numbers.                                                                                                                                                                |\n| -------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Action in accordance with LBA AD 87-1.Note: Dornier All Operators Telex AOT 228/86/012 dated 4 November 1986, and Goodyear Service Bulletins DO 228-32-7 and DO 228-32-8, refer.                                                    |\n| Compliance:    | Before 30 April 2006, unless already accomplished.                                                                                                                                                                                  |\n|                | This Airworthiness Directive becomes effective on 13 April 2006.                                                                                                                                                                    |\n| Background:    | The manufacturer received a report that the bushing cup of a main landing gear inboard wheel half migrated from the wheel centre bore. Consequently the inboard bearing failed, and the brake assembly and wheel half were damaged. |\n\n![](image.001.png)  \nDavid Punshon  \nDelegate of the Civil Aviation Safety Authority\n\n27 February 2006","sortOrder":0},{"sectionNumber":"AD/DO 228/8","sectionType":"part","heading":"AD/DO 228/8","content":"## AD/DO 228/8","sortOrder":1},{"sectionNumber":"Main Wheel/Brake Assembly","sectionType":"part","heading":"Main Wheel/Brake Assembly","content":"## Main Wheel/Brake Assembly","sortOrder":2},{"sectionNumber":"4/2006","sectionType":"part","heading":"4/2006","content":"## 4/2006","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"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"No indication in this instrument that the applicability or remedial scope has been broadened or narrowed. The AD applies to the listed Dornier 228 models (all serial numbers) and mandates action in accordance with LBA AD 87‑1 and the referenced service bulletins, consistent with the referenced foreign directive and manufacturer guidance (Applicability; Requirement)."},"complexity_factors":["External cross-reference to LBA AD 87‑1 and multiple manufacturer documents (Dornier AOT 228/86/012; Goodyear SBs) — dependency on external texts increases procedural complexity (Requirement).","Broad applicability across multiple Dornier 228 submodels and all serial numbers — wide operational scope for affected operators (Applicability).","Short compliance window (compliance by 30 April 2006; effective 13 April 2006) — scheduling and resource strain for operators and maintenance providers (Compliance).","The AD does not reproduce detailed corrective steps; it directs operators to follow other documents, creating reliance on those documents for technical content (Requirement).","Enforcement and issuance by CASA delegate — centralised administrative authority with delegated discretion (This Airworthiness Directive becomes effective).","Implicit costs: parts, labour, and aircraft downtime arising from inspections/repairs reported in background (Background)."],"plain_english_summary":"This Airworthiness Directive requires operators of Dornier 228-100/101 and 228-200/201 aeroplanes (all serial numbers) to carry out the inspection and repair actions specified in LBA AD 87‑1 and the referenced manufacturer bulletins to address reported migration of a main wheel bushing cup. Compliance is required by 30 April 2006; the AD is effective 13 April 2006. (Applicability; Requirement; Compliance; Background)\n\nOperators pay for the inspections/repairs and must follow the external documents cited; the CASA delegate issued and enforces the directive, creating a short-term maintenance and administrative burden and reliance on the referenced foreign AD and service bulletins. (Requirement; This Airworthiness Directive becomes effective; Background)"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard single-issue Airworthiness Directive addressing a specific mechanical defect. It has not expanded beyond its original purpose of mandating inspection/repair of the main wheel/brake assembly defect."},"complexity_factors":["Very short document (under 300 words)","Only 4 defined elements: applicability (specific aircraft models), requirement (reference to external document), compliance deadline, and background","Single condition: compliance required unless already accomplished","No nested exceptions or conditional logic","Heavy reliance on external references (LBA AD 87-1, Dornier AOT, Goodyear Service Bulletins) — complexity is offloaded to those documents","No interpretation section or defined terms within the instrument itself"],"plain_english_summary":"This AD requires owners/operators of Dornier 228-100/-101/-200/-201 aircraft to inspect and, if necessary, repair the main wheel/brake assembly because the bushing cup can displace, causing bearing, brake, or wheel damage and risk of brake failure or collapse.  \n\nWork must follow the referenced German LBA AD and manufacturer bulletins and be completed by 30 April 2006 (effective 13 April 2006)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-do-228-8-main-wheel-brake-assembly","history":"/api/acts/ad-do-228-8-main-wheel-brake-assembly/history","analysis":"/api/acts/ad-do-228-8-main-wheel-brake-assembly/analysis","conflicts":"/api/acts/ad-do-228-8-main-wheel-brake-assembly/conflicts","importantCases":"/api/acts/ad-do-228-8-main-wheel-brake-assembly/important-cases","documents":"/api/acts/ad-do-228-8-main-wheel-brake-assembly/documents"}}